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Which ion produces a small crystal field...

Which ion produces a small crystal field splitting (a weak ligand field)?

A

(a) `I^(-)`

B

(b) `Cl^(-)`

C

(c) `F^(-)`

D

(d) All

Text Solution

Verified by Experts

The correct Answer is:
D
Strong ligand produces more crystal field splitting. Weak ligand produces small crystal field splitting, thereby increasing strength of ligands
`I^(-)ltBr^(-)ltS^(2-)ltSCN^(-)ltCl^(-)ltN^(3-)ltF^(-)`
Weak field ligand
`ltOH^(-)ltC_2 O_4^(-2)ltH_2OltNCS^(-)`
`~H^(-)ltNH_3lten=CO_3^(2-)ltNO_2^(-)ltCN^(-)ltCO^(-)` increasing order of strong field ligands
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