The mass defect of a nucleus is the difference between the total mass of a nucleus and the sum of the masses of all its constituent nucleons. Mass defect is the difference between the predicted mass and the actual mass of an atom's nucleus. The binding energy of a system can appear as extra mass, which accounts for this difference.

Complete the nuclear reaction O 8 15 + n 0 1 → C 6 12 + ?

Given, O 8 15 + n 0 1 → C 6 12 + ? Equating atomic number and mass number. Atomic number of unknown element = 8 + 0 - 6 = 2 Mass number of unknown element = 15 + 1 - 12 = 4 Hence, the unknown element is He 2 4 .

Complete the nuclear reactions N 7 14 + ? → C 6 14 + H 1 1

Given, N 7 14 + ? → C 6 14 + H 1 1 Equating atomic number and mass number. Atomic number of unknown element = 6 + 1 - 7 = 0 Mass number of unknown element = 14 + 1 - 14 = 1 Hence, the unknown element is n 0 1 .

A beta particle, also called beta ray or beta radiation, is a high-energy, high-speed electron or positron emitted by the radioactive decay of an atomic nucleus during the process of beta decay. There are two forms of beta decay, β⁻ decay and β⁺ decay, which produce electrons and positrons respectively.