NEET UG 2017 — Chemistry Inorganic Chemistry

2017mcqmedium

Pick out the correct statement with respect to $[\mathrm{Mn}(\mathrm{CN}{)}_{6}{]}^{3-}.$

Official previous-year question

Held on 30 Apr 2017 · Verified 9 Jul 2026.

Options

A
It is ${\mathrm{sp}}^{3}{d}^{2}$ hybridised and octahedral.
B
It is ${\mathrm{sp}}^{3}{d}^{2}$ hybridised and tetrahedral.
C
It is ${d}^{2}{\mathrm{sp}}^{3}$ hybridised and octahedral.
D
It is ${\mathrm{dsp}}^{2}$ hybridised and square planar.

Did you get this right?

Solution

${[\mathrm{Mn}{(\mathrm{CN})}_{6}]}^{3-}$

$\mathrm{Mn}(\mathrm{III})=[\mathrm{Ar}]3{d}^{4}$

${\mathrm{CN}}^{-}$ being strong field ligand forces pairing of electrons.

This gives ${t}_{2g}^{4} {e}_{g}^{0}$

NEET 2017 Chemistry, Coordination Compounds — solution figure 1

$\because$ The coordination number of $\mathrm{Mn}=6$

$\therefore$ Structure $=$ octahedral

${[\mathrm{Mn}{(\mathrm{CN})}_{6}]}^{3-}=$

NEET 2017 Chemistry, Coordination Compounds — solution figure 2

Your note

NEET UG Inorganic Chemistry in other years

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NEET UG 2017 — Chemistry Inorganic Chemistry

2017mcqmedium

Pick out the correct statement with respect to $[\mathrm{Mn}(\mathrm{CN}{)}_{6}{]}^{3-}.$

Official previous-year question

Held on 30 Apr 2017 · Verified 9 Jul 2026.

Options

A
It is ${\mathrm{sp}}^{3}{d}^{2}$ hybridised and octahedral.
B
It is ${\mathrm{sp}}^{3}{d}^{2}$ hybridised and tetrahedral.
C
It is ${d}^{2}{\mathrm{sp}}^{3}$ hybridised and octahedral.
D
It is ${\mathrm{dsp}}^{2}$ hybridised and square planar.

Did you get this right?

Solution

${[\mathrm{Mn}{(\mathrm{CN})}_{6}]}^{3-}$

$\mathrm{Mn}(\mathrm{III})=[\mathrm{Ar}]3{d}^{4}$

${\mathrm{CN}}^{-}$ being strong field ligand forces pairing of electrons.

This gives ${t}_{2g}^{4} {e}_{g}^{0}$

NEET 2017 Chemistry, Coordination Compounds — solution figure 1

$\because$ The coordination number of $\mathrm{Mn}=6$

$\therefore$ Structure $=$ octahedral

${[\mathrm{Mn}{(\mathrm{CN})}_{6}]}^{3-}=$

NEET 2017 Chemistry, Coordination Compounds — solution figure 2

Your note

NEET UG Inorganic Chemistry in other years

Keep practicing Inorganic Chemistry

Work through every NEET UG Inorganic Chemistry PYQ, year by year.

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NEET UG 2017 — Chemistry Inorganic Chemistry

Options

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Solution

Your note

NEET UG Inorganic Chemistry in other years

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NEET UG 2017 — Chemistry Inorganic Chemistry

Options

Did you get this right?

Solution

Your note

NEET UG Inorganic Chemistry in other years

More NEET UG Inorganic Chemistry questions

Other Chemistry topics for NEET UG

Physical Chemistry

Organic Chemistry

Keep practicing Inorganic Chemistry