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Q.

The atomic numbers of the metallic and non-metallic elements which are liquid at room temperature respectively are :

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a

55, 87

b

35, 80

c

80, 35

d

33, 87

answer is D.

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Detailed Solution

The atomic numbers of the metallic and non-metallic elements which are liquid at room temperature respectively are Hg and Br.

The elements are Hg and Br, with atomic numbers : 80 and 35 respectively.

Hence option D is correct

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