Given below are two statements : Statement I : [CoBr4] 2– ion will absorb light of lower energy than [CoCl4] 2– ion. Statement II : In [CoI4] 2– ion, the energy separation between the two set of d-orb

Question

Given below are two statements : Statement I : [CoBr4] 2– ion will absorb light of lower energy than [CoCl4] 2– ion. Statement II : In [CoI4] 2– ion, the energy separation between the two set of d-orbitals is more than [CoCl4] 2– ion. In the light of the above statements, choose the correct answer from the options given below :

(A) Both Statement I and Statement II are false
(B) Statement I is true but Statement II is false
(C) Statement I is false but Statement II is true
(D) Both Statement I and Statement II are true

Prashant Kotian · Accepted Answer

Correct answer: B. Statement 1 (True) Strength of ligand : Cl – > Br – t : [CoCl4] 2– > [CoBr4] 2– Eabsorbed : [CoCl4] 2– > [CoBr4] 2– Statement 2 (False) Strength of ligand : I – < Cl – t : [CoI4] 2– < [CoCl4] 2–

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