Question
Chemistry Question on properties of d block elements
The melting points of Cu, Ag and Au follow the order
A
Cu>Ag>Au
B
Cu>Au>Ag
C
Au>Ag>Cu
D
Ag>Au>Cu
Answer
Cu>Au>Ag
Explanation
Solution
All have d10 configuration. There is only 1e−for metallic bonding. Now size of atoms or kernels increases down the group. Hence, metallic bonding weakness due to less attraction of electrons involved in metallic bonding. Ag<Au<Cu