Question

Cu2O vallency of the metallic element
FeCl3 vallency. ..

Answer 1

hey frnd....

in Cu2O the metallic element is copper so it has a valency of 1 coz it's the cuprous(I)

and
FeCl3 -the metallic element is iron so here it's valency is 3 coz it's ferric(III)


hope this helps u. dear....!