Question

93. The elements A, B, C, D and E have atomic
numbers 9, 11, 17,12 and 13 respectively. The pair
of elements which belongs to the same group of
the periodic table is:
(a) A and B
(b) B and D
(c) A and C
(d) D and E​

Answer 1

Explanation:

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Answer 2

Answer:

Option c... A and C

Explanation:

Because both belongs to Halogen Group No. 17