Question

Explain with example Atomi Numder? ​

Answer 1

Atomic number is the total number of protons present in the nucleus of an atom. It is also equal to the number of electrons for a neutral atom. Example, atomic number of sodium is 11. ii) Mass number is the number of protons and neutrons in the nucleus taken together.

Answer 2

Explanation:

) Atomic number: The atomic number is the total number of protons present in the atom. For example, the atomic number of Mg is 12. It contains 12 protons and 12 electrons. (ii) Mass number: It is the sum of the number of neutrons and the number of protons.