Question

Define atomic number.

Answer 1

Atomic Number(Z):

The number of protons present in the nucleus of the atom of an element is called its atomic number, which is denoted by the letter Z.

$\mathrm{Example}:{}_7{}^{14}\mathrm{N}\mathrm{has}7\mathrm{protons}\mathrm{and}7\mathrm{neutrons}.\mathrm{Therefore}\mathrm{atomic}\mathrm{number}\mathrm{of}\mathrm{nitrogen}\mathrm{is}7.$