Question

In which of the following,the central atom has two line pairs of electrons?(a) sf4 , (b)brf5,(c)so2,(d)xef4

Answer 1

Answer:

XeF4 has 2 lone pairs.

Explanation:

use hybridization formula,

S+1/2(G-V).

No of atoms other than xe are 4 (i.e s=4).

Group number of xe is 8.

flourine is monvalent since 4 Flourine atoms are present v=4.

so, 4+1/2(8-4)

4+1/2(4)

4+2 = 6 = sp3d2.

since value of 1/2(G-V), is no of lone pairs, we have 2 lone pairs in XeF4.