Question

Which one of the following pairs of atomic numbers represents elements belonging to the same group?
(1) 13 and 31(2) 11 and 20(3) 14 and 33(4)12 and 30​

Answer 1

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question

Which one of the following pairs of atomic numbers represents elements belonging to the same group?

(1) 13 and 31(2) 11 and 20(3) 14 and 33(4)12 and 30

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answer:--.

correct answer is (1) 13 and 31☺☺

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