Question

The element nitrogen has the atomic number 7 and an atomic mass of 14. How many neutrons does an atom of nitrogen contain?

Answer 1

The atomic number of a neutral atom is equal to the number of protons and the number of electrons of the atom. The atomic weight meanwhile is equal to the sum of the number of protons and number of neutrons. . In this case, the no.of protons is 7 and the number of neutrons is 14-7 equal to 7.