Science, asked by sanjivgayan5103, 9 months ago

The elements A, B, C, D and E have atomic numbers 9, 11, 17, 12 and 13 . pectively. Which pair of elements belongs to the same group?
a) A and B (b) B and D
(c) D and E (d) A and C

Answers

Answered by varshitha1934

3

Answer:

Explanation: 9th element is flourine,

11th is sodium,

12th is magnessium

13th is alluminium

17th is chlorine ...

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