Question

The compound (s) with two lone pairs of electrons
on the central atom is (are)
A. `BrF_(5)`
B. `CIF_(3)`
C. `XeF_(4)`
D. `Sf_(4)`

Answer 1

Correct Answer - B::C
In `BrF_(5),Br` has 7 valence electrons ,five are shared
with five F atoms . Hence, lone pair =1
In`CIF_(3)` Cl has 7 valence electrons, three are
shared with three F atom, lone pairs =2.
In`XeF_(4)`,Xe has 8 valence electrons, four are
shared with four F atoms, lone pairs =2
In`SF_(4),S` has 6 valence electrons, four are shared
with four F atoms, lone pair =1