GENERAL KNOWLEDGE

Detailed explanation-1: -Measure mainly of the nuclear particles: protons + neutrons. Value representing the number of protons in an element. Atoms of the same element with different numbers of neutrons. A charged atom.

Detailed explanation-2: -Fundamental Subatomic Particles The mass number of the atom (M) is equal to the sum of the number of protons and neutrons in the nucleus. The number of neutrons is equal to the difference between the mass number of the atom (M) and the atomic number (Z).

Detailed explanation-3: -Free neutrons have a measured lifetime of 880 s, but disagreement between existing laboratory measurements of 10 s have persisted over many years. This uncertainty has implications for multiple physics disciplines, including standard-model particle physics and Big-Bang nucleosynthesis.

Detailed explanation-4: -Nucleus of an Atom – atomic mass It is called the Atomic Mass Unit (u). Its reference is taken as Carbon-12 and 1 Atomic Mass unit is equal to 1/12th the weight of one atom of Carbon 12.

Detailed explanation-5: -The mass of the neutron can be calculated by subtracting the mass of a proton from the mass of a deuterium nucleus (deuterium is an isotope of hydrogen containing one proton, one electron, and one neutron in its atomic structure.