Science, asked by shushantsingh42, 4 months ago

The elements A, B, C, D and E have atomic number 9, 11, 13, 12 and 17 respectively. Which pair of elements belong to the same group? *

Answers

Answered by hemantkumarharsh9455

1

Answer:

A AND E BELONGS TO SAME GROUP BECAUSE GROUP DEPENDS ON VALENCE ELECTRON AND BOTH HAVE 7 ELECTRONS IN THEIR VALENCE SHELL

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