KEAM 2016 Physics and Chemistry Paper

Xe has eight electrons in its outermost shell It forms one sigma (σ) bond with fluorine and one double bond (1σ+1π) with oxygen Thus, number of bond pairs and lone pairs are

	Compound	Bond pairs (bp)	Lone pairs(langle‌p)
(a)	XeF6	6	1
(b)	XeF4	4	2
(c)	XeOF4	2+4=6	1
(d)	XeO3	3×2=6	1
(e)	XeF2	2	3

Hence. (e) has maximum number of lone pairs of electrons.