Math, asked by alhamd165, 11 months ago

The elements a, b, c, d and e have atomic number 9, 11, 17, 12 and 13 respectively. Which pair of elements belong to same group?

Answers

Answered by vanshika8867

Answer:

a and. c will belong to the same group bcoz they have common element present in the outer most shell and have same properties which repeats after the 7th element

Answered by avanthikaa0704

Answer:

ELEMENTS ATOMIC NO. NAME OF THE ELEMENTS

A 9 FLUORINE

B 11 SODIUM

C 17 CHLORINE

D 12 MAGNESIUM

E 13 ALUMINIUM

ACCORDING TO THE PERIODIC TABLE

MAGNESIUM AND ALUMINIUM BELONG TO GROUP 3

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