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

  1. A

    55, 87

  2. B

    33, 87

  3. C

    35, 80

  4. D

    80, 35

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    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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