GENERAL KNOWLEDGE

Detailed explanation-1: -Most of an atom’s mass is in the nucleus-a small, dense area at the center of every atom, composed of nucleons. Nucleons include protons and neutrons.

Detailed explanation-2: -The nucleus contains protons, which have a positive charge equal in magnitude to the electron’s negative charge. The nucleus may also contain neutrons, which have virtually the same mass but no charge.

Detailed explanation-3: -The mass of an atom consists of the mass of the nucleus plus that of the electrons, so the atomic mass unit is not exactly the same as the mass of the proton or neutron.

Detailed explanation-4: -Structure: Our current model of the atom can be broken down into three constituents parts – protons, neutron, and electrons. Each of these parts has an associated charge, with protons carrying a positive charge, electrons having a negative charge, and neutrons possessing no net charge.

Detailed explanation-5: -Protons and neutrons have approximately the same mass, about 1.67 × 10-24 grams. Scientists define this amount of mass as one atomic mass unit (amu) or one Dalton. Although similar in mass, protons are positively charged, while neutrons have no charge.