Question

Among the following which represents ‘ous' in its oxidation state
a)Fe-II
b)Cu-I
c)Sn-2
d)Pb-IV​

Answer 1

Explanation:

b) Cu-l

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Answer 2

Answer:

a)Fe-ll

Explanation:

Iron is Fe and its Suffix when used elementary wise then it's used 'ous' behind , i.e. Ferrous . Eg:- Ferrous sulphate