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In which of the following options, the molecules are correctly matched with their atomicity?
Column-I Column-II
1) $P_{4}$ p) 7
2) $H N O_{3}$ q) 6
3) $N_{2} H_{4}$ r) 5
4) $H_{2} S O_{4}$ s) 4

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(1 – s), (2 – r), (3 – p), (4 – q)

(1 – q), (2 – s), (3 – p), (4 – r)

(1 – q), (2 – s), (3 – r), (4 – p)

(1 – s), (2 – r), (3 – q), (4 – p)

answer is D.

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Detailed Solution

Atomicity = Total no. of atoms present in a molecule
4 in $P_{4}$ , 1 + 1 + 3 = 5 in $H N O_{3}$ , 2 + 4 = 6 in $N_{2} H_{4}$ & 2 + 1 + 4 = 7 in $H_{2} S O_{4}$ .

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