what are atoms of nitrAogen with different numbers of neutrons called?

Atoms of nitrogen with different numbers of neutrons are called isotopes.

Isotopes are forms of an element that have the same number of protons in their nucleus but different numbers of neutrons. In the case of nitrogen, the most common isotope has 7 protons and 7 neutrons, which is called nitrogen-14 (written as 14N). However, there are other isotopes of nitrogen with slightly different numbers of neutrons. For example, nitrogen-15 (15N) has an extra neutron, while nitrogen-13 (13N) has one less neutron.

Isotopes have the same chemical properties as their respective element, but their physical properties, such as mass and stability, may differ due to their varying number of neutrons.