The $d$ electron configuration of $C r^{2 +}, M n^{2 +}, F e^{2 +}$ and $N i^{2 +}$ are $3 d^{4}, 3 d^{5}, 3 d^{6}$ and $3 d^{8}$ respectively. Which one of the following aqua complexes will exhibit the maximum paramagnetic behaviour?

$[F e (H_{2} O)_{6}]^{2 +}$

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$[N i (H_{2} O)_{6}]^{2 +}$

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$[C r (H_{2} O)_{6}]^{2 +}$

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$[M n (H_{2} O)_{6}]^{2 +}$

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Solution

The correct option is D
$[M n (H_{2} O)_{6}]^{2 +}$

$H_{2} O$ is a weak field ligand and $M n^{2 +}$ has maximum numbers of unpaired electrons i.e. 5. So, $[M n (H_{2} O)_{6}]^{2 +}$ will exhibit the maximum paramagnetic behaviour.

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Similar questions

The $d$ electron configuration of $C r^{2 +}, M n^{2 +}, F e^{2 +}$ and $N i^{2 +}$ are $3 d^{4}, 3 d^{5}, 3 d^{6}$ and $3 d^{8}$ respectively. Which one of the following aqua complexes will exhibit the maximum paramagnetic behaviour?

Q. The

d -

electronic configuration of

C r^{2 +}, M n^{2 +}, F e^{2 +}

and

N i^{2 +}

are

3 d^{4}, 3 d^{5}, 3 d^{6}

and

3 d^{8}

respectively, which one of the following aqua-complex will exhibit the minimum paramagnetic behaviour?

The d - electron configurations of $M n^{2 +}, F e^{2 +}, C o^{3 +}, a n d N i^{2 +} a r e 3 d^{5}, 3 d^{6}, 3 d^{6}, 3 d^{8},$ respectively. Which of the following aqua complexes will exhibit the minimum paramagnetic behavior?

Q. The d electron configuration of

C r^{2 +}, M n^{2 +}, F e^{2 +} a n d N i^{2 +} a r e 3 d^{4}, 3 d^{5}, 3 d^{6} a n d 3 d^{8}

respectively. Which one of the following aqua complex will exhibit the minimum paramagnetic behaviour? (At. No.

C r = 24, M n = 25, F e = 26, N i = 28

)

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The d electron configuration of Cr2+,Mn2+,Fe2+ and Ni2+ are 3d4,3d5,3d6 and 3d8 respectively. Which one of the following aqua complexes will exhibit the maximum paramagnetic behaviour?

The correct option is D [Mn(H2O)6]2+ H2O is a weak field ligand and Mn2+ has maximum numbers of unpaired electrons i.e. 5. So, [Mn(H2O)6]2+ will exhibit the maximum paramagnetic behaviour.

The $d$ electron configuration of $C r^{2 +}, M n^{2 +}, F e^{2 +}$ and $N i^{2 +}$ are $3 d^{4}, 3 d^{5}, 3 d^{6}$ and $3 d^{8}$ respectively. Which one of the following aqua complexes will exhibit the maximum paramagnetic behaviour?

The correct option is D
$[M n (H_{2} O)_{6}]^{2 +}$

$H_{2} O$ is a weak field ligand and $M n^{2 +}$ has maximum numbers of unpaired electrons i.e. 5. So, $[M n (H_{2} O)_{6}]^{2 +}$ will exhibit the maximum paramagnetic behaviour.