Which one of the following statements is/are correct?
1. The number of protons in a nucleus is called its atomic number.
2. The total number of protons and neutrons constitutes its mass number.
1
1 only
2
2 only
3
Both 1 and 2
4
Neither 1 nor 2
Which one of the following statements is/are correct?
1. The number of protons in a nucleus is called its atomic number.
2. The total number of protons and neutrons constitutes its mass number.