Question

If the atomic weight of nitrogen is 14.0, what is the mass of one mole of nitrogen gas, ${N_2}$ ?

Answer 1

The atomic weight is the entire weight of an atom. It is about equal to the amount of protons and neutrons, with the electrons adding a bit extra. The quantity of neutrons in the nucleus, and therefore the atom's radioactivity, is highly reliant on its stability.

Complete answer:
Neutrons are also found in the nuclei of atoms, and they assist to hold the nucleus together. A neutron is somewhat more heavy than a proton and has no electrical charge. Because a neutron may decay into a proton plus an electron (the essence of beta decay), it's sometimes useful to imagine a neutron as a mixture of an electron and a proton, albeit this is an oversimplification at best. A neutron has no influence on the number of electrons circling the nucleus since it has no charge. A neutron, on the other hand, is considerably more hefty than a proton and may greatly increase the weight of an atom.
As a result, each atom may be assigned both an atomic number and an atomic weight (the number of protons equals the number of electrons) (approximately equaling the number of protons plus the number of neutrons). In the nucleus of a standard helium atom, for example, there are two protons and two neutrons, with two electrons in orbit. The mass of an individual atom is measured in atomic mass units. The element nitrogen has a molar mass of 14.0 g/mol.
Nitrogen gas ( ${N_2}$ ) has a molar mass of 14.0g/mol x 2 = 28.0 g/mol.

Note:
Chemical behaviour is what caused scientists to divide things into different elements in the first place. The capacity of one atom to mix with other atoms is known as chemical behaviour. Chemical behaviour, in more scientific words, is determined by the type and quantity of chemical bonds that an atom may create with other atoms.