Question

the atom of an element is made up of 14 protons and 15 years old and 14 electrons write down its atomic number and its mass number​

Answer 1

Given, p=e=14

So, it is a neutral atom.

The atomic number is equal to number of protons in the nucleus of the atom,

So,atomic number is14.

Mass number of an atom is equal to total number of nucleons i.e sum of protons and neutrons inside the nucleus so,

Mass number = 15+14

=29.