Q1 of 40 Page 128

Among the following the odd pair is

It can be seen that the third pair has atoms with same number of neutrons i.e. the two atoms are isotones. But, none other pair has isotenes.

Change in the number of neutrons in an atom changes it to

The term nucleons refer to

The number of protons, neutrons and electrons present respectively in ⁸⁰₃₅Br

The correct electronic configuration of potassium is

Questions · 40

5. Atomic Structure

1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 1 1 1 1 1 1 2 3 4 5 1 2 3 4 5 1 2 3 1 2 3 1 2 3