QJEEM21Cha1e7: JEE Main 2021 Chemistry - Class 12 JEEM21Cha1e7 Solution: Which one of the following species responds to an external…

Question

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Which one of the following species responds to an external magnetic field?

Accepted Answer

1.

{[\mathop {Fe}\limits^{ + 3} {({H_2}O)_6}]^{3 + }}

F{e^{3 + }}:[Ar]3{d^5}

Hybridisation :

s{p^3}{d^2}

Magnetic nature : Paramagnetic (so this complex response to external magnetic field)

2.

{[Ni{(CN)_4}]^{2 - }}

N{i^{2 + }}:[Ar]3{d^8}

Hybridisation : dsp²

Magnetic nature : diamagnetic

3.

{[Co{(CN)_6}]^{3 - }}

C{o^{3 + }}:[Ar]3{d^6}

Hybridisation :

{d^2}s{p^3}

Magnetic nature : diamagnetic

4.

[Ni{(CO)_4}]

Ni:[Ar]3{d^8}4{s^2}

Hybridisation :

s{p^3}

Magnetic nature : diamagnetic

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