Atoms of different elements having the same number of neutrons but differnet atomic numbers are called

Assertion (A): Two atoms of different elements having same mass number but different atomic numbers are called isobars. Reason (R): Atomic number is the number of protons present and mass number is the total number of protons and neutrons present in a nucleus.

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

Atoms of different elements with their nuclei having same number of neutrons but different number of protons are called.

Elements having the same atomic number , but different mass number are called____.

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