JEE Main levelOne or more correct optionsDifficulty 2 of 3ph142
In which of the following does Xe carry exactly one lone pair?
AXeOX3
BXeFX4
CXeFX5X+
DXeOX2FX2
Answer: A, C, D
XeO3 (3 sigma bonds, 4 pairs), XeFX5X+ (5 bond pairs, 6 pairs in all) and XeOX2FX2 (4 sigma bonds, 5 pairs) each have one lone pair. XeF4 has two lone pairs.