Question

Which of the following element belongs to noble gas group atomic number 2 for atomic number 18 or atomic number 35 or atomic numbers 86

Answer 1

Answer:

THE ELEMENTS WITH ATOMIC NUMBER 2 ,18,86 WILL COME UNDER NOBLE GAS GROUP

Explanation:

ATOMIC NUMBER (Z) :-

Z=2 = He (Ve- = 0)

Z = 18 =Ar (Ve- = 8)

Z = 35 = Br (Ve- = 7)

Z = 86 = RN (Ve- = 8)

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