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How can you explain the formula Fe3O4 if Fe has the valency 2 and 3 only?
Wiki User
∙ 13y ago
The formula Fe3O4 is an empirical formula, and a more nearly structural formula is FeO.Fe2O3, which shows valency 2 in its first part and valency 3 in its second part. Two-thirds of the iron cations have valency 3 and the others valency 2, combined in a single crystal structure.
Wiki User
∙ 13y ago
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How do you find the valency of each element in Fe3O4?
This is an especially complicated valency problem, because Fe3O4 is a combination of Fe2O3 and FeO. As usual, except in peroxides and superoxides, oxygen is assigned a valency of -2. This means that the iron in Fe2O3 has a valency of +3 while the iron in FeO has a valency of +2. (Note that these two oxides of iron also occur separately from each other, as well as in Fe3O4.) Therefore, the average valency of iron in Fe3O4 is 8/3, a rare example of fractional valency made possible only by the fact that iron in this compound actually exists in two integral valence states in the same compound.
What is the valency of nitrogen and oxygen in nitrous oxide?
Only a mean value can be given for oxidation values in N2O: N +1 , O -2Valency can only be picturised.Nitrous oxide, commonly known as laughing gas,[1] is a chemical compound with the formula N2OA good picture with bonding electron pairs in N2O is given in 'Related links' just below this answer page.
What is the valency and atomic number of ammonium bi-carbonate?
As a compound the substance has neither a valence nor an atomic number. Only elements have atomic numbers. Only atoms and ions have valences.
What is the valency of caesium?
The valency of Caesium (Cs) is '1' . It is a Group 'I' metal, therefore it is able to ionise(lose) one electrons. Consequently it is only able to form oner bond.
Explain why the surface of sodium is only shiny when it is freshly cut?
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How do you find the valency of each element in Fe3O4?
This is an especially complicated valency problem, because Fe3O4 is a combination of Fe2O3 and FeO. As usual, except in peroxides and superoxides, oxygen is assigned a valency of -2. This means that the iron in Fe2O3 has a valency of +3 while the iron in FeO has a valency of +2. (Note that these two oxides of iron also occur separately from each other, as well as in Fe3O4.) Therefore, the average valency of iron in Fe3O4 is 8/3, a rare example of fractional valency made possible only by the fact that iron in this compound actually exists in two integral valence states in the same compound.
Why is Fe balanced with coefficient of 3 instead of a subscript of 3?
The subscript is mentioned only in a chemical formula.3 FeCl3 in a chemical reaction is not similar to Fe3O4 in a chemical formula.
How can you tell the difference between ionic and covalent bond only by looking at the chemical formula?
A compound formed by ionic bond will have charges written on the Chemical formula of the compound since ionic compounds carry charges. But, covalent compounds won't have charges associated with them because they are not formed by the transfer of electrons. Another way of telling the difference is by looking at the valencies. One of the elements present in a covalent compound will have tetra-valency i.e., a valency of 4.
What is the formula for calcium dilhydrogen phosphate?
According to Wikipedia, Ca(H2PO4)2: Calcium forms a divalent cation, and the polyatomic anion dihydrogen* phosphate has only a single negative valency.
What is the name of compound with the formula B2Br2?
KBr2 does NOT exist, bromide (being Br-) has a valency of (minus) one, so the only possibility is KBr, potassium bromide, in solution as ions: K+ and Br-
What is the valence of beryllium?
The beryllium atom has 4 electrons and the valence is 2.
What is the valency of an atom of a mass number 25?
The only non-radioactive isotope with a mass number of 25 is magnesium-25. The valency of magnesium is 2.
Why is formula of calcium bromide CaBr2?
as you know, in writting a formula the valencies interchanges, if you remember the valency of calcium is 2, because it is the 20th element, and the valency of bromine is 3,so that atom of bromine we know is 3,but remember that bromine is a transition metal in five blocks of metals, this means that it can adopt the characteristics of its peer reactant,so in general anyway bromine react with calcium its valency tends to be 1(in other ways it is not must to be written), which after it reacts witso that is why you can see as it is! Bromine with 2 valencies and calcium with only one. i hope i tried to answer, thanks.
Why does only phosphorus have valency more than 4?
No. Nitrogen does, as well.
Why scandium has valency of 3 whereas its outer shell has only two electrons?
scandium belongs to 3d series and in scandium in addition to 2 electrons in 4s one electron of 3d subshell also takes part in bonding so its valency is three despite of only two electrons in outer shell. remember valency is no. of electrons taking part in bonding
What noble gas doesn't have 8 valence electrons it only has what?
He does not have 8 valence electrons. It has only 2 valency electrons.
When helium's electrons in the outer most shell is two why its valency is 0?
Valency is not the no. of electrons in the outermost shell. It is the no. of electrons an atom has to lose or gain or share to achieve the electronic configuration of nearest noble gas and bcome stable. However, Helium has only K-shell which is complete. Hence it is stable and a noble gas. Therefore, its valency is zero.
