Question

If we keep an iron piece in solid state CuSO4 crystals, does it get any reaction? And A,B are two elements it's compound material is A2B then what will be the c
Valency of A and B ?

Answer 1

When Iron piece is kept in Solid CuSO4 crystals , No reaction takes place .As Solid CuSO4 does not conduct electricity because of absence of ions.
When dissolved in Water it acts as Good electrolyte.

Given compound Is A2B
By Criss Cross method : Valency of element A is 1 and Element B valency is 2.