Question

Which of the following has been arranged in order of increasing bond strength ?
A. `Zn_2^(2+) lt Hg_2^(2+) lt Cd_2^(2+)`
B. `Cd_2^(2+) lt Hg_2^(2+) lt Zn_2^(2+)`
C. `Zn_2^(2+) lt Cd_2^(2+) lt Hg_2^(2+)`
D. `Hg_2^(2+) lt Cd_2^(2+) lt Zn_2^(2+)`

Answer 1

Correct Answer - C
Due to poor shielding of 4f electrons, bond strength is maximum for `Hg^(+)-Hg^(+)`.