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Coordination Compounds question

2023 · 6 Apr · Shift 1 · Q1

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PYQ Library
JEE Main
Chemistry
Coordination Compounds
2023 · 6 Apr · Shift 1 · Q1

Coordination Compounds question

2023 · 6 Apr · Shift 1 · Q1

JEE MainChemistryCoordination CompoundsMCQ+4 / −1

Given below are two statements, one is labelled as Assertion

\mathbf{A}

and the other is labelled as Reason

\mathbf{R}

. Assertion A: The spin only magnetic moment value for

\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{3-}

is

1.74 \mathrm{BM}

, whereas for

\left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}

is

5.92 \mathrm{BM}

. Reason

\mathbf{R}

: In both complexes,

\mathrm{Fe}

is present in +3 oxidation state. In the light of the above statements, choose the correct answer from the options given below:

A
Both A and R are true and R is the correct explanation of A
B
A is true but R is false
C
A is false but R is true
D
Both A and R are true but R is NOT the correct explanation of A

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