The mass number of a nucleus is `216`. The size of an atom without changing its chemical properties are called

The mass number of a nucleus is 216 .The size of the nuclei of the order of

The particles which can be added to the nucleus of an atom without changing its chemical properties are

The size of atomic nucleus is

Which one og the following particles can be added to the nucleus of an atom, without changing, its chemical properties?

What electrons in an atom influence its chemical properties ?

The number of protons in the nucleus of an atom is its …………….

The atoms of same element having same chemical properties but different masses are called