Question

Give two examples
variable valency:
of elements showing​

Answer 1

Answer:

Sometimes, same element may exhibit one valency in one compound and another valency in other compound. This property is called as variable valency.

Elements that show variable valency are

Iron (Fe)2,3

Copper (Cu) 1,2

Mercury(Mg)1,2

Lead (Pb) 2,4

Tin(Sn)2,4

1,2,4 are the different valencies shown by a single element.

Answer 2

Answer:

iron

copper

mercury

lead

tin