Which of the following ions has same number of unpaired electrons as those present in $V^{3 +}$ ion?

{F e}^{3 +}

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{N i}^{2 +}

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{M n}^{2 +}

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{C r}^{3 +}

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Solution

The correct option is C ${N i}^{2 +}$
$V^{3 +}$ has $3 d^{2}$ outer electronic configuration with 2 unpaired electrons. ${N i}^{2 +}$ has $3 d^{8}$ outer electronic configuration with 2 unpaired electrons. Thus, $V^{3 +}$ and ${N i}^{2 +}$ have same number of unpaired electrons.

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Which of the following ion has same number of unpaired electrons as that of $V^{3 +}$ ion?

Question 14

The pair of ions having same electronic configuration is.............

(a) $C r^{3 +}, F e^{3 +}$ (b) $F e^{3 +}, M n^{2 +} +$ (c) $F e^{3 +}, C o^{3 +}$ (d) $S C^{3 +}, C r^{3 +}$

How many unpaired electrons are present in $N i^{2 +}$ ion?

Write down the number of 3d electrons in each of the following ions:

Ti²⁺, V²⁺, Cr³⁺, Mn²⁺, Fe²⁺, Fe³⁺, CO²⁺, Ni²⁺ and Cu²⁺.

Indicate how would you expect the five 3d orbitals to be occupied for these hydrated ions (octahedral).

{C r}^{3 +}

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