The shape of [Cu(NH3)4]2+ is square plan

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Target Exam

CUET

Subject

Chemistry

Chapter

Inorganic: Coordination Compounds

Question:

The shape of [Cu(NH₃)₄]²⁺ is square planar. What is its hybridisation?

Options:

sp³ hybridised

dsp² hybridised

sp³d hybridised

sp³d² hybridised

Correct Answer:

dsp² hybridised

Explanation:

Square planar geometry arises due to

d s p^{2}

hybridisation.

C u^{2 +}

ion has the electronic configuration

[A r] 3 d^{9} 4 s^{0}

and the electrons are reaaranged to

[A r] 3 d^{8} 4 s^{0} 4 p^{1}

and one 3d, one 4s and two 4p undergo

d s p^{2}

hybridization and accept one lone pair of electrons each from 4 ammonia molecules.