Question

Metals with variable valency. Give examples.

Answer 1

Chromium (2 and 3), copper (1 and 2) and mercury (1 and 2),tin (2 and 4).

Hope it helps u.

Answer 2

Hey friend here is ur solution

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All transition elements show variable valances
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example

Mn --Mangnese

Fe-- Iron
Copper. Cu⁺(Cuprous), Cu²⁺(Cupric)Cobalt.

Co²⁺(Cobaltous), Co³⁺(Cobaltic.Iron.

Fe²⁺(Ferrous), Fe³⁺(Ferric)Lead.

Pb²⁺(Plumbous), Pb⁴⁺(Plumbic)Mercury.

Hg₂²⁺(Mercurous), Hg²⁺(Mercuric.Tin.

Sn₂⁺(Stannous), Sn⁴⁺(Stannic)

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Hope this will help you..