Two different elements may have same mass number but not the same __________________.

Atoms of different elements have the same mass .

Atoms of different elements having the same mass number are known as _____

Atoms of different elements may have ______ atoms masses .

Atoms of different elements having same mass number but different atomic numbers are called

The atoms of different elements having same mass number but different atomic number are known as isobars. The sum of protons and neutrons, in the isobars is always different.

The atoms of different elements having same mass number but different atomic number are known as isobars. The sum of protons and neutrons, in the isobars is always different.

Atoms of different elements with different atomic numbers, having the same mass number is known as ________