Number of elements that generally do not show variable valencies Cu , Zn , Au , Cd , Sc , La , Pt , Co .

Question

Number of elements that generally do not show variable valencies Cu , Zn , Au , Cd , Sc , La , Pt , Co . (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

Zn , Cd , Sc and La do not show variable valencies.

Q. Number of elements that generally do not show variable valencies $C u, Z n, A u, C d, S c, L a, Pt, C o .$