1.

Which of the following has been arranged in order of increasing bond strength ?

Answer»

`Zn_2^(2+) LT Hg_2^(2+) lt Cd_2^(2+)`
`Cd_2^(2+) lt Hg_2^(2+) lt Zn_2^(2+)`
`Zn_2^(2+) lt Cd_2^(2+) lt Hg_2^(2+)`
`Hg_2^(2+) lt Cd_2^(2+) lt Zn_2^(2+)`

Solution :Due to poor shielding of 4f ELECTRONS, bond STRENGTH is maximum for `HG^(+)-Hg^(+)`.


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