Question

calculate the number of proton electrons neutrons in an element having 2electron in its N shell​

Answer 1

Answer:

For M shell value of n=3. Thus the electronic configuration is : 2, 8, 2 and atomic number is 12.

No. of neutrons = Atomic mass - No. of protons = 24 - 12 = 12

Thus number of protons = atomic number =12.

Answer 2

Explanation:

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