Question

Match List - I with List - II:

	List - I		List - II
	(Species)		(Number of lone pairs of electrons on the central atom)
(A)	XeF2	(i)	0
(B)	XeO2F2	(ii)	1
(C)	XeO3F2	(iii)	2
(D)	XeF4	(iv)	3

Choose the most appropriate answer from the options given below:

Options

• (A) - (iv), (B) - (i), (C) - (ii), (D) - (iii) 

• (A) - (iii), (B) - (iv), (C) - (ii), (D) - (i) 

• (A) - (iii), (B) - (ii), (C) - (iv), (D) - (i) 

• (A) - (iv), (B) - (ii), (C) - (i), (D) - (iii)

Answer 1

(A) - (iv), (B) - (ii), (C) - (i), (D) - (iii)

Explanation:

Number of lone pairs of electrons on the central atom

`("Number of valence electrons on central atom" - 2("Number of bivalent atoms") - ("Number of monovalent atoms"))/2`

Species	No. of lone pair
XeF2	n = `(8 - 2)/2 = 3`
XeO2F2	n = `(8 - (2 xx 2) - 2)/2` = 1
XeO3F2	n = `(8 - (2 xx 3) - 2)/2` = 0
XeF4	n = `(8 - 4)/2 = 2`