1.

Assertion. The [Ni(en)_(3)]Cl_(2) (en = ethylenediamine) has lower stability than [Ni(NH_(3))_(6)]Cl_(2). Reason. In [Ni(en)_(3)]Cl_(2), the geometry of Ni is trigonal bipyramidal.

Answer»

If both assertion and REASON are true, but reason is not the true explanation of the assertion
If both assertion and reason are true, but reason is not the true explanation of the assertion
If assertionis true, but reason is false
If both assertion and reason are false

Solution :Correct A. `[NI(en)_(3)]Cl_(2)` has greater stability than `[Ni(NH_(3))_(6)]Cl_(2)`.
Correct R. `[Ni(en)_(3)]Cl_(2)` has bidentate LIGAND, en, forming CHELATES.


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