Among the following complexes, the total number of diamagnetic species is \ \ \ \ \ . [ Mn ( NH 3 ) 6 ] 3+ , [ MnCl 6 ] 3- , [ FeF 6 ] 3- , [ CoF 6 ] 3- , [ Fe ( NH 3 ) 6 ] 3+ and [ Co ( en ) 3 ] 3+ [Given, atomic number: Mn =25, Fe =26, Co =27 ; en = H 2 NCH 2 CH 2 NH 2 ]

Chemistry · Coordination Compounds

JEE Advanced 2024 — Paper 1 — Question 43

Among the following complexes, the total number of diamagnetic species is $\_\_\_\_\_$ . $\left[\mathrm{Mn}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+},\left[\mathrm{MnCl}_{6}\right]^{3-},\left[\mathrm{FeF}_{6}\right]^{3-},\left[\mathrm{CoF}_{6}\right]^{3-},\left[\mathrm{Fe}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+}$ and $\left[\mathrm{Co}(\mathrm{en})_{3}\right]^{3+}$ [Given, atomic number: $\mathrm{Mn}=25, \mathrm{Fe}=26, \mathrm{Co}=27$ ; en $=\mathrm{H}_{2} \mathrm{NCH}_{2} \mathrm{CH}_{2} \mathrm{NH}_{2}$ ]

Answer: 1

Numerical answer — enter this value.

Step-by-step solution

$\left[\mathrm{Mn}\left(\mathrm{NH}_{3}\right)_{6}\right]^{+3}, \mathrm{n}=2$ , Paramagnetic
$\left[\mathrm{MnCl}_{6}\right]^{-3}, \quad \mathrm{n}=4$ , Paramagnetic
$\left[\mathrm{FeF}_{6}\right]^{-3}, \quad \mathrm{n}=5$ , Paramagnetic
$\left[\mathrm{CoF}_{6}\right]^{-3}, \quad \mathrm{n}=4$ , Paramagnetic
$\left[\mathrm{Fe}\left(\mathrm{NH}_{3}\right)_{6}\right]^{+3}, \mathrm{n}=1$ , Paramagnetic
$\left[\mathrm{Co}(\mathrm{en})_{3}\right]^{+3}, \mathrm{n}=0$ , Diamagnetic

Answer key and solution verified before publishing.

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Exam: JEE Advanced 2024
Paper: Paper 1
Subject: Chemistry
Chapter: Coordination Compounds
Topic: Theories of Bonding in Coordination Compounds