Which of the following is the true state

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Target Exam

CUET

Subject

Chemistry

Chapter

Inorganic: Coordination Compounds

Question:

Which of the following is the true statement about [PtCl₂(NH₃)₂] (Electronic configuration of Pt: [Xe]5d⁸6s²) ?

Options:

A tetrahedral geometry and is paramagnetic in behaviour

A tetrahedral geometry and is diamagnetic in behaviour

A square planar geometry and is paramagnetic in behaviour

A square planar geometry and is diamagnetic in behaviour

Correct Answer:

A square planar geometry and is diamagnetic in behaviour

Explanation:

The correct answer is option 4. A square planar geometry and is diamagnetic in behaviour.

Oxidation state of $N H_{3}$ in the given compound $= 0$

Oxidation state of

C l

in the given compound

= - 1

Let

x

be the oxidation state of

P t

in the given compound.

Therefore,

x + 2 (- 1) + 2 (0) = 0

\Rightarrow x = + 2

O.S. of Pt (Z = 78) in the complex is +2

(P t^{2 +})

P t^{2 +} : [X e] 4 f^{14} 5 d^{8}

The eight electrons in

5 d

-subshell pair up in four

d

-orbitals followed by d

s p^{2}

-hybridisation, The shape of the complex is square planar.