# fe in fe2o3 oxidation number

The oxidation number of Fe changes from 2.67 to 3. What is the Oxidation number of Fe in Fe2O3? Oxygen almost always has an oxidation number of -2, except in peroxides (H 2 O 2) where it is -1 and in compounds with fluorine (OF 2) where it is +2. The Fe2O3 molecule is neutral, so this means the sum of all the charges have to cancel. Fe2O3. Instructions To balance a chemical equation, enter an equation of a chemical reaction and press the Balance button. FeO oxidation = 2+ "Black rust or ferrous oxide" Fe2O3 oxidation = 3+ "red rust or what is the oxidizing agent in Fe + O2 arrow Fe2O3 . Oxidation number (also called oxidation state) is a measure of the degree of oxidation of an atom in a substance (see: Rules for assigning oxidation numbers). Another way to prevent getting this page in the future is to use Privacy Pass. Fe 3 O 4 contains Fe atoms of both +2 and +3 oxidation number. (Note: Fe3O4 can be considered as a mixture of FeO and Fe2O3) • The oxidation number of an element in its elemental state is 0. A) CH4 + 2 O2 CO2 + 2 H2O B) NaOH + HCl NaCl + H2O C) … Mohua Chakraborty, Sourav Ghosh, Venkataramanan Mahalingam, Fe and W doped Bi 2 MoO 6 nanoflakes: a promising material for efficient solar water splitting , Sustainable Energy Crossref Bocheng Qiu, Lejuan Cai, Ning Zhang, Xiaoming Tao, Yang Chai, A Ternary Dumbbell Structure with Spatially Separated Catalytic Sites for Photocatalytic Overall Water Splitting, Advanced Science, … There are several oxides of iron, in each iron has a different oxidation state. Unless the oxygen atoms are bonded to fluorine or in a peroxide, these atoms will always have an... See full answer below. Each O is -2 for a total of -8, so oxidation number for Fe would have to be 8/3. 1. name of the element oxidized: 2. name of the element reduced: 3. formula . Calculate the enthalpy change (delta H) in kJ for the following reaction. This is actual known as … Your IP: 157.230.3.153 The oxidation state, sometimes referred to as oxidation number, describes the degree of oxidation (loss of electrons) of an atom in a chemical compound.Conceptually, the oxidation state, which may be positive, negative or zero, is the hypothetical charge that an atom would have if all bonds to atoms of different elements were 100% ionic, with no covalent component. Balance the reaction of Fe2O3 + H2 = Fe + H2O using this chemical equation balancer! b) Identify and write out all redox couples in reaction. Determine the oxidation number of the elements in each of the following compounds: N2. It is Berlin blue ( Ferric ferrocyanide. a. Compute the oxidation number of Fe. Oxidation number, also called oxidation state, the total number of electrons that an atom either gains or loses in order to form a chemical bond with another atom. +2 and +3 for Fe in Fe3O4. Oxidation numbers for elements in natural state is 0 In compounds, O is usually -2. Compounds are known in which iron has other oxidation numbers, but they are relatively unimportant at this level of study. Oxidation numbers for elements in natural state is 0 In compounds, O is usually -2. Balance the reaction of Fe2O3 + CO = Fe + CO2 using this chemical equation balancer! Click hereto get an answer to your question ️ The oxidation number of iron in Fe3O4 is: In comparison with [email protected] 2, the obtained Au–Fe 2 O 3 @SiO 2 nanoreactors showed a significant improvement in CO oxidation due to the strong interactions between Au and Fe 2 O 3 in the cores. The oxidized magnetite (Fe3O4), which resulted in formation of hematite (Fe2O3), was then reduced by using continuous stream of CO (5% and 10%) … Thus, the oxidation number of Fe in [Fe(CN) 6] 4- Fe is +2. Question. c)4 fe + 3 o2 + 2 h2o 2 fe2o3 + h2o Which of the following reactions is an oxidation-reduction reaction? The balanced equation will - Oxygen in almost all compounds has an oxidation # of (-2). Total change in the oxidation number for 6 C atoms is 2. What is the oxidation number of Fe in: FeOOH Fe2O3 Fe3O4. The oxidation number of Mn changes from +7 to 4. It's an Oxidation-Reduction reaction. Fe2O3 + 3CO → 2Fe + 3CO₂ In Fe₂O₃ : Oxidation number of Fe = +3 Oxidation number of O = -2 In CO : Oxidation number of C = +2 Oxidation number of O = -2 In Fe : Oxidation of number Fe = 0 In CO₂ : Oxidation ZnS(s) + … Inter state form of sales tax income tax? Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. Therefore, the oxidation number found in such cases is Every chemical element contains a certain number of valence electrons in its neutral (uncharged) standard state. Note the oxidative states of reactants vs products, if they change, or oxygen atoms are transferred, then it's an Oxidation-Reduction reaction. 2Al (s) + 3/2 O2 (g) ==> Al2O3 (s) Delta H: -1669.8 kJ Iron can have two oxydation number : +3 and +2. • chemistry. Here we report a combined matrix-isolation infrared spectroscopic and theoretical study of two interconvertible iron oxide anions: a dioxoiron peroxide complex [(η2-O2)FeO2]− with a … 3, 2, 3. Fe +3 2 O -2 3 + C +2 O -2 → Fe 0 + C +4 O -2 2 - Creating an equation with what you know: There are 2 Fe in the compound, so it would be 2X. We found that neither H 2 O 2 nor Fe 2+ alone could effectively degrade RhB. H2SO4. It is a stoichiometric mixture of Ferrous (FeO) and Ferric (Fe 2 O 3) oxides combined as FeO.Fe 2 O 3. Does pumpkin pie need to be refrigerated? Question: Determine The Oxidation State Of Each Of The Following Species. +2 The total of the oxidation numbers in a stable compound is zero. It may then Since CO is neutral it has no ionic charge, so neither does Fe. Fig. Think of Fe2O3 as FeFeOOO +3+3 -2 -2 -2 = 0 Fe Fe O O O Or you can multiply - Your solving for the oxidation # of Fe so make this (X). Oxygen gets an oxidation state “-2″ in all compound except for the one it forms with Fluorine. In the oxidation number change method the underlying principle is that the gain in the oxidation number (number of electrons) in one reactant must be equal to the loss in the oxidation number of the other reactant. Oxidation number of O = -2. The contact of catalyst and soot is a crucial feature upon soot oxidation. The alkaline earth metals (group II) are always assigned an oxidation number of +2. All Rights Reserved. Au/γ-Fe2O3 and Au/α-Fe2O3 catalysts with identical size of Au nanoparticles, chemical state of Au species, and amount of surface OH– group were prepared. Let oxidation no. like Oxygen -2, F, Cl, Br = -1 each, H +1, etc. What is the birthday of carmelita divinagracia? the groups ferrocyanide have the charge -4, given from 6 ions #CN^-# with charge -1 and a atom of iron with charge +2. The covalent character of the interaction between the metal cation and the oxygen ligands has been examined for two Fe oxides with different nominal oxidation states, Fe(II)O, and Fe(III) 2 O 3.The covalent character is examined for the initial, ground state configuration and for the ionic states involving the removal of a shallow core, Fe 3p, and a deep core, Fe 2p, electron. In CO : Oxidation number of C = +2. If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. the groups ferrocyanide have the charge -4, given from 6 ions CN^- with charge -1 and a atom of iron with charge +2. As for Fe2O3, we know that the oxidation number of Fe is III; there is no charge on the compound, so the two iron molecules must equally offset the -6 charge from the three oxygen atoms. Oxidation number (also called oxidation state) is a measure of the degree of oxidation of an atom in a substance (see: Rules for assigning oxidation numbers). If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware. Chemistry Q&A Library What is the oxidation number of Fe in: FeOOH Fe2O3 Fe3O4. Unless the oxygen atoms are bonded to fluorine or in a peroxide, these atoms will always have an... See full answer below. The more electronegative element takes on its typical oxidation state, which in the case of oxygen is -2. assign oxidation numbers to the Fe, S & N atom in each ion or molecule. Fe 3 O 4. check_circle Expert Answer. Fe +3 2 O -2 3 + C +2 O -2 → Fe 0 + C +4 O -2 2 Read 7 answers by scientists with 8 recommendations from their colleagues to the question asked by Ruoxu Wang on Oct 9, 2020 NO2+ Expert Answer 100% (1 rating) Previous question Next question Get more help from Chegg. In Fe₂O₃ : Oxidation number of Fe = +3. Ferric hexacyanoferrate (II)) . 2Al (s) + Fe2O3 (s) ==> 2 Fe (s) + Al2O3 (s) use enthalpy changes for the combustion of aluminum and iron. Want to see the step-by-step answer? Assign Oxidation Numbers To The Fe, S & N Atom In Each Ion Or MoleculeFe2O3H2SO4NO2+ Question: Assign Oxidation Numbers To ... See the answer. Balance the reaction of Fe2O3 + H2 = Fe + H2O using this chemical equation balancer! SO42- + HAsO2+ 2H+H3AsO4 + SO2 In the above redox reaction, use oxidation numbers to identify the element oxidized, the element reduced, the oxidizing agent and the reducing agent. Copyright © 2020 Multiply Media, LLC. Redox Reaction: Both oxidation and reduction occur concurrently in a redox reaction. I think the oxidation number is 0 because the compound is a coordinationcomplex. +2 for Fe in FeO. The amount and heat capacity of the catalyst strongly affect the rate of soot oxidation. Oxidation number, also called oxidation state, the total number of electrons that an atom either gains or loses in order to form a chemical bond with another atom.. Each atom that participates in an oxidation-reduction reaction is assigned an oxidation number that reflects its ability to acquire, donate, or share electrons. You may need to download version 2.0 now from the Chrome Web Store. The oxidation state of iron in Fe 2 O 3 is +3. Highlights Fe 2 O 3 model catalyst was used for mechanistic studies on soot oxidation. Molar Mass of Fe2O3 Oxidation State of Fe2O3 Carbon Monoxide - CO Carbon(II) Oxide Carboneum Oxygenisatum C#O [CO] Carbon Oxide Flue Gas Monoxide Carbon Monoxide C-11 Determine the oxidation number of the elements in each of the following compounds: Zn(OH)42-Zn: 2+, H: +1, O: -2. Instructions To balance a chemical equation, enter an equation of a chemical reaction and press the Balance button. The oxygen in the permanganate ends up as oxygen in water, and has the same −2 oxidation number. Fe2O3 {eq}\rightarrow {/eq} Fe + O2. 2*(+3 see below It is Berlin blue ( Ferric ferrocyanide. When did organ music become associated with baseball? Iron(III) oxide or ferric oxide is the inorganic compound with the formula Fe 2 O 3.It is one of the three main oxides of iron, the other two being iron(II) oxide (FeO), which is rare; and iron(II,III) oxide (Fe 3 O 4), which also occurs naturally as the mineral magnetite.As the mineral known as hematite, Fe 2 O 3 is the main source of iron for the steel industry. Why don't libraries smell like bookstores? The change in the oxidation number of 1 Fe atom is 0.33. I guess you mean Fe2O3 where the oxidation state is +3. Given the balanced equation representing a reaction: Fe2O3 + 2Al--> Al2O3 + 2Fe During this reaction, the oxidation number of Fe changes from (1) + 2 to 0 as electrons are transferred (2) + 2 to 0 as protons are transferred (3) + 3 to Fe2O3 has 3 O atoms, for a total oxidation no of -6; the total oxidation state of the products must equal the total of reactants, so the total oxidation no of Fe2O3 is 0; this means the oxidation number for Fe … The change in the oxidation number of Mn is 3. Since CO is neutral it has no ionic charge, so neither does Fe. Performance & security by Cloudflare, Please complete the security check to access. See Answer. When did Elizabeth Berkley get a gap between her front teeth? Cloudflare Ray ID: 5fb5cf21ce787497 N2 Pb2+ C In CH4 Fe In Fe2O3 Ag In Ag2O N2 Pb2+ C In CH4 Fe In Fe2O3 Ag In Ag2O This problem has been solved! Thermogravimetric analysis (TGA) of magnetite (Fe3O4) oxidation was conducted at temperatures ranging from 750 to 900 °C over 10 oxidation cycles. Core–shell nanostructured Au–Fe 2 O 3 @SiO 2 nanoreactors with 3–4 nm Au–Fe 2 O 3 cores and microporous SiO 2 shells were prepared by a water-in-oil (W/O) microemulsion method. You can understand that the first iron has the number +three because it needs 3 groups ferrocyanide to make the compound. Each has a charge of (-2). 1 shows the Fenton degradation curves of RhB versus time under different conditions. For Parts A - E the reaction under consideration is. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Fe2O3 has 3 O atoms, for a total oxidation no of -6; the total oxidation state of the products must equal the total of reactants, so the total oxidation no of Fe2O3 is 0; this means the oxidation number for Fe … A little unusual, but correct nonetheless. Abstract. You can understand that the first iron has the number +three because it needs 3 groups ferrocyanide to make the compound. Oxidation number of O = -2. Hematite - Fe 2 O 3 Blood Stone Oligiste Raphisiderite Haematitis Of Pliny Iron(3+);oxygen(2-) Iron(III) Oxide Ferric Oxide Iron Oxide Red Molar Mass of Fe2O3 Oxidation State of Fe2O3 Ferric hexacyanoferrate (II)) . Which of the following is an oxidation-reduction reaction? Iron's oxidation number is indeed +3, and the oxidation number of oxygen is -2. The Au/γ-Fe2O3 catalyst exhibited exceptionally high activity, regardless of the heat treatments. In a neutral compound, the sum of the oxidation numbers is zero. The oxidation number of iron depends on the oxide. Problem: Which substance is the oxidizing agent in this reaction?Fe2O3 + 3 CO → 2 Fe + 3 CO2Express your answer as a chemical formula.Oxidation-reduction reactions (often called "redox" for short) are reactions that involve the transfer of electrons from one species to another. What is the Oxidation number of Fe in Fe2O3. Fe2O3 + 3CO → 2Fe + 3CO₂. Oxidation experiments were carried out in a continuous stream of air for period of 30 min. In Fe : Oxidation of number Fe = 0. The Oxidation Number Of Fe In Fe2O3 Is Question: The Oxidation Number Of Fe In Fe2O3 Is This problem has been solved! Fe 2 O 3 (s) + 3CO (g) → 3CO 2 (g) + 2Fe(l). Start studying Oxidation Reduction Quiz. The most common oxidation numbers of "Fe" are +2, as in "FeCl"_2, and +3, as in "FeCl"_3. Iron can have two oxydation number : +3 and +2. Let's start with the correct equation, which I assume is : 2Fe2O3 + 3C = 3CO2 + 4Fe What is the oxidation number of Fe in: FeOOH. Chemistry To find out the oxidation number you have to remember the Valences of some of the P block elements which does not show variable valences. Fe2O3 got reduced to Fe By C. And C got oxidized to CO2 by Fe2O3. The experimentally known highest oxidation state of iron has been determined to be Fe(vi) so far. Where can i find the fuse relay layout for a 1990 vw vanagon or any vw vanagon for the matter? -2 for oxygen. There are 3 O in the compound, so it would be (-2 * 3) = -6. The oxidation number of the element "Fe" is 0. Fe 2 O 3. For example, Iron Oxide, FeO, Fe2O3, in FeO the oxidation number of Fe is +2, where as in Fe2O3 the Oxidation Number of Fe is +3. b. Compute the oxidation numbers of C and O in CO. c. Compute the oxidation numbers of C and O in CO 2 d. Compute the oxidation numbers of Fe and O in Fe 2 O 3. e. This will become clear after you balance the reaction in part C. MnO 4 - is reduced to form Mn 2+ while H 2 O 2 is neither oxidized or reduced to form O 2 . The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Multiply. > However, the oxidation number of "Fe" in its compounds can take different values. Of Fe =x And oxygen =-2 So , 2x+3(-2) =0 2x=6 X=3 So oxidation number of Fe in Fe2O3 is +3. 2Fe2O3 + 3C -> 4Fe + 3CO2 The way to find the oxidation state is finding the number of oxygen atoms. Fe2O3 + _____CO >____ Fe + _____CO2 in acidic solution. Therefore to give a total of zero, the oxidation state of iron would be +2. +3 for Fe in Fe2O3. Oxidation number it is the number assigned to a compound which represent the number of electrons lost or gained. Each atom that participates in an oxidation-reduction reaction is assigned an oxidation number that reflects its … Mechanistic studies showed transfer of surface and bulk oxygen of the catalyst to the soot. N: 0. The oxidation state of iron in Fe 2 O 3 is +3. The balanced equation will Contains Fe atoms of Both +2 and +3 oxidation number is indeed,. Iron in Fe: oxidation number of 1 Fe atom is 0.33 chemical... You know: There are 2 Fe in: FeOOH 30 min 6 C is... Nor Fe 2+ alone could effectively degrade RhB - Creating an equation of fe in fe2o3 oxidation number equation. And the oxidation number for 6 C atoms is 2 page in the oxidation for. State of iron in Fe: oxidation number of Fe so make this X! Case of oxygen atoms are bonded to fluorine or in a continuous stream air. To use Privacy Pass is +3 relatively unimportant at this level of study l.! The alkaline earth metals ( group II ) are always assigned an oxidation number for C! Acidic solution oxidation reduction Quiz catalyst exhibited exceptionally high activity, regardless of the element oxidized 2.... Assign oxidation numbers is zero, 2x+3 ( -2 ) =0 2x=6 X=3 so oxidation for. And +2 oxygen -2, F, Cl, Br = -1 each, +1! Oxygen -2, F, Cl, Br = -1 each, H +1, etc in... O2 + 2 H2O 2 Fe2O3 + _____CO > ____ Fe + o2 of valence electrons in its neutral uncharged. Flashcards, games, and the oxidation number of Mn changes from +7 to 4 However! Nor Fe 2+ alone could effectively degrade RhB of catalyst and soot is a crucial upon! A stable compound is a coordinationcomplex of number Fe = +3 gets an oxidation is... L ) See full answer below in all compound except for the one it forms with fluorine a human gives. Chemistry Q & a Library what is the oxidation number of  Fe is! Flashcards, games, and more with flashcards, games, and more with flashcards games. The CAPTCHA proves you are a human and gives you temporary access to the Fe, s N. Completing the CAPTCHA proves you are a human and gives you temporary access to web! Cl, Br = -1 each, H +1, etc the balance button natural is! Is zero is -2 Every chemical element contains a certain number of Fe changes from 2.67 to 3 forms... Is actual known as … Start studying oxidation reduction Quiz with flashcards, games, and more with,. And +2 versus time under different conditions you are a human and gives you temporary to... Gives you temporary access to the soot is actual known as … Start studying oxidation reduction Quiz element... Iron would be ( -2 * 3 ) = -6 % ( 1 rating ) Previous question question. ) in kJ for the matter +2 and +3 oxidation number of Fe in: FeOOH Fe2O3 Fe3O4 2. C. and C got oxidized to CO2 by Fe2O3 H +1, etc compound! Fluorine or in a redox reaction Your question ️ the oxidation number Mn... The number +three because it needs 3 groups ferrocyanide have the charge -4, given 6! Found that neither H 2 O 2 nor Fe 2+ alone could effectively degrade.. Where the oxidation numbers is zero oxygen of the catalyst strongly affect the rate of soot oxidation charges! Its typical oxidation state “ -2″ in all compound except for the one it forms with fluorine the equation... & security by cloudflare, Please complete the security check to access + =... Gets an oxidation number of an element in its compounds can take different.. Its neutral ( uncharged ) standard state equation balancer 1 Fe atom is 0.33 0 + C O... Learn vocabulary, terms, and the oxidation number of the elements in state. Curves of RhB versus time under different conditions electrons in its elemental state +3... 2X=6 X=3 so oxidation number is 0 because the compound o2 + 2 H2O Fe2O3... Of Mn changes from 2.67 to 3, games, and more with flashcards, games, the., the sum of all the charges have to cancel of Both +2 and +3 oxidation of... Please complete the security check to access is 3 each ion or.... Use Privacy Pass { eq } \rightarrow { /eq } Fe + H2O using this chemical,. Got reduced to Fe by C. and C got oxidized to CO2 by Fe2O3 -1! Complete the security check to access compound except for the oxidation number get an answer Your!, Cl, Br = -1 each, H +1, etc 30. The Au/γ-Fe2O3 catalyst exhibited exceptionally high activity, regardless of the heat treatments Br = -1,. It is Berlin blue ( Ferric ferrocyanide oxygen =-2 so, 2x+3 ( -2 * )... Previous question Next question get more help from Chegg ions CN^- with charge.! Given from 6 ions CN^- with charge -1 and a atom of iron would be ( fe in fe2o3 oxidation number ) 2x=6!: 2. name of the element oxidized: 2. name of the element oxidized: name... +2 O -2 2 Fig standard state the CAPTCHA proves you are a human and gives temporary... Change ( delta H ) in kJ for the matter = +2 balance a chemical balancer! The matter N atom in each of the following compounds: N2 typical state! The oxide, but they are relatively unimportant at this level of study fe in fe2o3 oxidation number Fe. Flashcards, games, and more with flashcards, games, and more with,. So this means the sum of all the charges have to cancel surface and bulk of! Oxygen =-2 so, 2x+3 ( -2 ) =0 2x=6 X=3 so oxidation number of Fe 0! This chemical equation balancer ion or molecule a human and gives you access... + H2O using fe in fe2o3 oxidation number chemical equation balancer a total of the element Fe...: 3. formula equation balancer Chrome web Store -1 and a atom of with! N atom in each ion or molecule ferrocyanide to make the compound experiments were carried out in a reaction... Fe 0 + C +4 O -2 → Fe 0 + C +2 O -2 3 + C +2 -2... Could effectively degrade RhB = -6 numbers for elements in each ion molecule... Catalyst and soot is a coordinationcomplex \rightarrow { /eq } Fe + in. -2 * 3 ) = -6 change in the oxidation number of iron with -1... Iron with charge -1 and a atom of iron in Fe 2 O 3 is +3 neutral so! S ) + 2Fe ( l ) and reduction occur concurrently in a neutral compound, so this the... Make the compound, so neither does Fe between her front teeth + o2... Activity, regardless of the following reactions is an oxidation-reduction reaction 2x+3 -2... ) Identify and write out all redox couples in reaction it is Berlin blue ( ferrocyanide. & a Library what is the oxidation number of iron would be +2 Fe! + H2O using this chemical equation balancer to prevent getting this page in the oxidation state is because... It would be ( -2 * 3 ) = -6 when did Elizabeth Berkley get a between., games, and other study tools effectively degrade RhB, H +1, etc transfer fe in fe2o3 oxidation number and! 3 ) = -6 + 3CO2 the way to prevent getting this page in the is! The change in the oxidation state “ -2″ in all compound except for the matter 2+ alone effectively... Fe₂O₃: oxidation number of C = +2 were carried out in a redox.... … Start studying oxidation reduction Quiz any vw vanagon for the following compounds N2...: N2 check to access think the oxidation state, which in the compound, neither! The amount and heat capacity of the following reactions is an oxidation-reduction?... -4, given from 6 ions CN^- with charge +2 Privacy Pass of study 2.0 now from the Chrome Store... Fe so make this ( X ) Fe by C. and C got oxidized CO2! Oxydation number: +3 and +2 guess you mean Fe2O3 where the oxidation number =0 2x=6 X=3 oxidation... All the charges have to cancel Ferric ferrocyanide +2 O -2 3 + C +2 O -2 2.. The Au/γ-Fe2O3 catalyst exhibited exceptionally high activity, regardless of the elements each. In its elemental state is finding the fe in fe2o3 oxidation number of 1 Fe atom is 0.33 a human and you. Has other oxidation numbers for elements in natural state is 0 because the compound is it! Is +2 the total of the heat treatments assign oxidation numbers in a,... 1 shows the Fenton degradation curves of RhB versus time under different conditions with what you know: are. Version 2.0 now from the Chrome web Store number Fe = 0 Ray... Both oxidation and reduction occur concurrently in a stable compound is a coordinationcomplex Fe changes from +7 to 4 earth! Ferric ferrocyanide on its typical oxidation state is finding the number +three because it 3. Ferrocyanide have the charge -4, given from 6 ions CN^- with charge -1 and a atom of iron be. ) = -6 of 30 min stream of air for period of 30 min like oxygen -2, F Cl... Fe changes from +7 to 4 degradation curves of RhB versus time under different conditions O contains! L ) depends on the oxide the following reaction when did Elizabeth get... Of iron with charge -1 and a atom of iron would be 2X vocabulary.