Which have melting point below $$500^o$$C?
Correct option is B. Zn, Cd
Solution:- (B) $$Zn, Cd$$M.P. for Cadmium is $$321.07 °C$$ and M.P. for Zn is $$419 °C$$
$$M.P. _{Cu} = 1084 ^oC$$
$$M.P. _{Ag} = 961 ^oC$$
$$Zn, Cd$$ has very low melting point due to low heat of atomization and weak metallic bond.