d- and f-Block Elements · Question 39

Consider 'n' is the number of lone pair of electrons present in the equatorial position of the most stable structure of ClF3. The ions from the following with 'n' number of unpaired electrons are Choose the correct answer from the options given below:

1. B and D Only
2. A, D and E Only
3. B and C Only
4. A and C Only

Answer

(2) A, D and E Only

Solution

ClF3: 3 bond pairs + 2 lone pairs sp3d, trigonal bipyramidal arrangement; both lone pairs occupy equatorial positions (T-shaped molecule) n = 2.

Unpaired electrons:

A. V3+: 3d2 2 ✓

B. Ti3+: 3d1 1

C. Cu2+: 3d9 1

D. Ni2+: 3d8 2 ✓

E. Ti2+: 3d2 2 ✓

A, D and E.

Answer: (2)