Question

explain with example
(I) atomic number (ii) Mass number (iii)isotopes and(iv) isobars​

Answer 1

1)the number of proton found in the nucleus of an atom is called atomic number .

2) the total number of proton & neutron in an atom is called mass number .

3)same atomic number but different mass number

4)differ atomic number but same mass number ²³N,²³O