Among the species given below, the total number of diamagnetic species is \ \ \ \ . H atom, NO 2 monomer, O 2 - (superoxide), dimeric sulphur in vapour phase, Mn 3 O 4 , ( NH 4 ) 2 [ FeCl 4 ], ( NH 4 ) 2 [ NiCl 4 ], K 2 MnO 4 , K 2 CrO 4

Chemistry · Coordination Compounds

JEE Advanced 2018 — Paper 1 — Question 19

Among the species given below, the total number of diamagnetic species is $\_\_\_\_$ .

H atom, $\mathrm{NO}_{2}$ monomer, $\mathrm{O}_{2}^{-}$ (superoxide), dimeric sulphur in vapour phase,

$\mathrm{Mn}_{3} \mathrm{O}_{4},\left(\mathrm{NH}_{4}\right)_{2}\left[\mathrm{FeCl}_{4}\right],\left(\mathrm{NH}_{4}\right)_{2}\left[\mathrm{NiCl}_{4}\right], \mathrm{K}_{2} \mathrm{MnO}_{4}, \mathrm{~K}_{2} \mathrm{CrO}_{4}$

Answer: 1

Numerical answer — enter this value.

Step-by-step solution

Paramagnetic: $\mathrm{H}, \mathrm{NO}_{2}$ monomer $\mathrm{O}_{2}^{-}$ (superoxide), $\mathrm{S}_{2}$ (Vapour), $\left[\mathrm{Mn}_{3} \mathrm{O}_{4}\right.$ is mixed oxide of $\mathrm{Mn}^{+2}$ and

$\left.\mathrm{Mn}^{+3}\right]$ ,

$\left(\mathrm{NH}_{4}\right)_{2}\left[\mathrm{FeCl}_{4}\right],\left(\mathrm{NH}_{4}\right)_{2}\left[\mathrm{NiCl}_{4}\right], \mathrm{K}_{2} \mathrm{MnO}_{4}$

Diamagnetic: $\mathrm{K}_{2} \mathrm{CrO}_{4}$

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Exam: JEE Advanced 2018
Paper: Paper 1
Subject: Chemistry
Chapter: Coordination Compounds
Topic: Properties and importance of Coordination Complexes

Answer: 1

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