The correct statement(s) regarding, (i) HClO, (ii) HClO_2 , (iii) HClO_3 and (iv) HClO_4 , is(are)

JEE Advanced 2015 Chemistry question

The correct statement(s) regarding, (i) HClO, (ii) , (iii) and (iv) , is(are)

(A)The number of Cl=O bonds in (ii) and (iii) together is two
(B)The number of lone pairs of electrons on Cl in (ii) and (iii) together is threeCorrect
(C)The hybridization of Cl in (iv) is Correct
(D)Amongst (i) to (iv), the strongest acid is (i)

Answer: (B),(C)

Solution

Structures: HClO = H-O-Cl (one bond and 3 lone pairs on Cl, no Cl=O); = H-O-Cl=O (1 Cl=O, 2 lone pairs on Cl); = H-O-Cl(=O) (2 Cl=O, 1 lone pair); = H-O-Cl(=O) (3 Cl=O, no lone pair). (A) Cl=O bonds in (ii) + (iii) : wrong. (B) Lone pairs on Cl in

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Question ID VK-026455