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

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

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

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[N i (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 C $[N i (H_{2} O)_{6}]^{2 +}$
Option (C) is correct.
$(A)$ : $[F e (H_{2} O)_{6}]^{2 +}$ has 4 unpaired electrons.
$(B)$ : $[C o (H_{2} O)_{6}]^{2 +}$ has 4 unpaired electrons.
$(C)$ : $[N i (H_{2} O)_{6}]^{2 +}$ has 2 unpaired electrons.
$(D)$ : $[M n (H_{2} O)_{6}]^{2 +}$ has 5 unpaired electrons.
Thus $[N i (H_{2} O)_{6}]^{2 +}$ will exhibit the minimum paramagnetic behaviour.

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Similar questions

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 -

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 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?

Which one of the following aqua complexes will exhibit the minimum paramagnetic behaviour?
(Atomic number Cr = 24, Mn = 25, Fe = 26, Ni = 28)

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 configurations of Mn2+,Fe2+,Co3+,andNi2+ are 3d5,3d6,3d6,3d8, respectively, Which of the following aqua complexes will exhibit the minimum paramagnetic behavior ?

The correct option is C [Ni(H2O)6]2+Option (C) is correct.(A) : [Fe(H2O)6]2+ has 4 unpaired electrons.(B): [Co(H2O)6]2+ has 4 unpaired electrons.(C) : [Ni(H2O)6]2+ has 2 unpaired electrons.(D) : [Mn(H2O)6]2+ has 5 unpaired electrons.Thus [Ni(H2O)6]2+ will exhibit the minimum paramagnetic behaviour.

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