Answer:
2. a. 1H= 1 electron, 1 proton, 0 neutron.
2H= 1 electron, 1 proton, 1 neutron.
3H= 1 electron, 1 proton, 2 neutrons.
b. You can called them, Hydrogen or protio, Deuterium and Tritium.
c. The most common form is Hydrogen (1H)
3. It will be 14N, the most common form.
Explanation:
The trree Hydrogen and Nitrogen forms are called isotopes (atoms with the same atomic number and different masic number)