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Assertion: [Ni(en)(3)]Cl(2) has lower st...

Assertion: `[Ni(en)_(3)]Cl_(2)` has lower stability than `[Ni(NH_(3))_(6)]Cl_(2)`
Reason: In `[Ni(en)_(3)]CI_(2)` the geometry of Ni is trigonal bipyramidal .

A

If both assertion and reason are true and the reason is the correct explanation of the assertion.

B

If both assertion and reason are true but reason is not the correct explanation of the assertion.

C

If assertion is true but reason is false.

D

If the assertion and reason both are false.

Text Solution

Verified by Experts

The correct Answer is:
D
Both assertion and reason are false. `[Ni (e n)_3]Cl_2` is a chelating compound and chelated complexes are more stable than similar complexes involves breaking of two bonds rather than one. In `[Ni(e n)_3]Cl_2` , Ni with `d^8` configuration shows octahedral geometry. Six electrons will occupy the `t_(2g)` orbitals and two electrons will occupy the `e_g` orbitals.
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