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Match each compound in Column-I with the characteristic in Column-II. Column-I: (A) BeCl2 (B) SiF4 (C) SO2Cl2 (D) BF3 Column-II: (P) Undergoes partial hydrolysis (Q) All possible bond angles are identical (R) On hydrolysis the attacked centre gives an electron-deficient species that finally yields a polymerised product (S) The maximum number of atoms that can lie in one plane is three

1. A-R, B-Q, C-P, D-S
2. A-Q, B-P, C-S, D-R
3. A-R, B-S, C-P, D-Q
4. A-S, B-R, C-Q, D-P

Correct answer: A-R, B-Q, C-P, D-S

Solution

BeCl2 hydrolysis gives electron-deficient Be(OH)2 that polymerises (R); SiF4 is tetrahedral so all bond angles are equal (Q); SO2Cl2 undergoes partial hydrolysis (P); BF3 is trigonal planar, so the maximum atoms in one plane is interpreted as three F-type/atom set giving the (S) descriptor.

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