Question

Explain nuclei with the help of atomic mass.

Answer 1

Nuclei:

• Atomic mass is the mass of an atom is measured in atomic mass units, which is the unit of mass equal to the one-twelfth mass of carbon.
• The experiments of Rutherford as we will as others showed that all nuclei are composed of two particles protons as well as neutrons.
• These two types of particles called nucleons are much more massive than electrons.
• Every nucleus can be specified by the number of protons as well as neutrons it contains.
• The number of protons in a nucleus is called the atomic number, Z.
• The number of neutrons in usually denoted by N, which can vary.
• The number of neutrons in atomic nuclei generally increases as the atomic number increases.

Therefore, Nuclei is the total number of neutrons and protons in a molecule.