Consider is the number of lone pair of electrons present in the equatorial position of the most stable structure of . The ions from the following with number of unpaired electron are [2025]

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Q.
Consider $‘ n ’$ is the number of lone pair of electrons present in the equatorial position of the most stable structure of ${ClF}_{3}$ . The ions from the following with $‘ n ’$ number of unpaired electron are [2025]

(A)   $V^{3 +}$
(B)   ${Ti}^{3 +}$
(C)   ${Cu}^{2 +}$
(D)   ${Ni}^{2 +}$
(E)   ${Ti}^{2 +}$

Choose the correct answer from the options given below :

1 (B) and (C) Only

2 (A) and (C) Only

3 (B) and (D) Only

4 (A), (D) and (E) Only

Ans.
(4)

S.N. Ion Electronic configuration Number of unpaired electrons

A $V^{3 +}$ ${}_{18}{[Ar]}$ $3 d^{2}$ 2

B ${Ti}^{3 +}$ ${}_{18}{[Ar]}$ $3 d^{1}$ 1

C ${Cu}^{2 +}$ ${}_{18}{[Ar]}$ $3 d^{9}$ 1

D ${Ni}^{2 +}$ ${}_{18}{[Ar]}$ $3 d^{8}$ 2

E ${Ti}^{2 +}$ ${}_{18}{[Ar]}$ $3 d^{2}$ 2

Solution

1 (B) and (C) Only

2 (A) and (C) Only

3 (B) and (D) Only

4 (A), (D) and (E) Only

Ans.
(4)

S.N. Ion Electronic configuration Number of unpaired electrons

A $V^{3 +}$ ${}_{18}{[Ar]}$ $3 d^{2}$ 2

B ${Ti}^{3 +}$ ${}_{18}{[Ar]}$ $3 d^{1}$ 1

C ${Cu}^{2 +}$ ${}_{18}{[Ar]}$ $3 d^{9}$ 1

D ${Ni}^{2 +}$ ${}_{18}{[Ar]}$ $3 d^{8}$ 2

E ${Ti}^{2 +}$ ${}_{18}{[Ar]}$ $3 d^{2}$ 2

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S.N.	Ion	Electronic configuration	Number of unpaired electrons
A	$V^{3 +}$	${}_{18}{[Ar]}$ $3 d^{2}$	2
B	${Ti}^{3 +}$	${}_{18}{[Ar]}$ $3 d^{1}$	1
C	${Cu}^{2 +}$	${}_{18}{[Ar]}$ $3 d^{9}$	1
D	${Ni}^{2 +}$	${}_{18}{[Ar]}$ $3 d^{8}$	2
E	${Ti}^{2 +}$	${}_{18}{[Ar]}$ $3 d^{2}$	2

Solution

1 (B) and (C) Only

2 (A) and (C) Only

3 (B) and (D) Only

4 (A), (D) and (E) Only

Ans. (4) S.N. Ion Electronic configuration Number of unpaired electrons A V3+ [Ar]183d2 2 B Ti3+ [Ar]183d1 1 C Cu2+ [Ar]183d9 1 D Ni2+ [Ar]183d8 2 E Ti2+ [Ar]183d2 2

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Ans.
(4)

S.N. Ion Electronic configuration Number of unpaired electrons

A $V^{3 +}$ ${}_{18}{[Ar]}$ $3 d^{2}$ 2

B ${Ti}^{3 +}$ ${}_{18}{[Ar]}$ $3 d^{1}$ 1

C ${Cu}^{2 +}$ ${}_{18}{[Ar]}$ $3 d^{9}$ 1

D ${Ni}^{2 +}$ ${}_{18}{[Ar]}$ $3 d^{8}$ 2

E ${Ti}^{2 +}$ ${}_{18}{[Ar]}$ $3 d^{2}$ 2