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Coordination Compounds question

2012 · Q109
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Coordination Compounds question

2012 · Q109

NEETChemistryCoordination CompoundsMCQ+4 / −1
Which one of the following is an outer orbital complex and exhibits paramagnetic behaviour?
  1. A
    [Ni(NH3)6]2+
  2. B
    [Zn(NH3)6]2+
  3. C
    [Cr(NH3)6]3+
  4. D
    [Co(NH3)6]3+
View written solutionFree

Correct answer: A

Those orbitals which utilizes 3d-orbitals for bonding and exhibit paramagnetic behaviour forms outer orbital complex.

Ni+2 = [Ar] 3d84s0

AIPMT 2012 Prelims Chemistry - Coordination Compounds Question 73 English Explanation


∴\therefore∴ It forms outer orbital complex.

(b) [Zn(NH3)6]2+ ⇒\Rightarrow⇒ outer orbital complex but diamagnetic

(c) [Cr(NH3)6]3+ ⇒\Rightarrow⇒ inner orbital complex but paramagnetic

(d) [Co(NH3)6]3+ ⇒\Rightarrow⇒ inner orbital complex but diamagnetic

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