Direction for: In each of the following questions a statement of Assertion is given followed by a corresponding statement of Reason just below it. Of the statements mark the correct answer as
Assertion: The \[[Ni{{(en)}_{3}}C{{l}_{2}}]C{{l}_{2}}\] (en= ethylene diamine) has lower stability than \[[Ni{{(N{{H}_{3}})}_{6}}C{{l}_{2}}]\]. Reason: In \[[Ni{{(en)}_{3}}C{{l}_{2}}]\] the geometry of Ni is trigonal bipyramidal.A) If both assertion and reason are true and reason is not the correct explanation of assertion.
B) If both assertion and reason are true but reason is not the correct explanation of assertion.
C) If assertion is true but reason is false.
D) If both assertion and reason are false
Correct Answer: D
Solution :
In \[[Ni{{(en)}_{3}}]C{{l}_{2}},\] ethylene diamine (en) is a bidentate ligand, hence it forms chela- ting ring with \[\text{N}{{\text{i}}^{\text{2+}}}\] in. Chelates are comparatively more stable, hence \[\text{ }\!\![\!\!\text{ Ni(en}{{\text{)}}_{3}}\text{ }\!\!]\!\!\text{ C}{{\text{l}}_{2}}\] is more stable than \[[Ni{{(N{{H}_{3}})}_{6}}]C{{l}_{2}}.\]You need to login to perform this action.
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