EVERYDAY SCIENCE

Detailed explanation-1: -Atomic nuclei consist of electrically positive protons and electrically neutral neutrons. These are held together by the strongest known fundamental force, called the strong force. The nucleus makes up much less than . 01% of the volume of the atom, but typically contains more than 99.9% of the mass of the atom.

Detailed explanation-2: -An atom is a complex arrangement of negatively charged electrons arranged in defined shells about a positively charged nucleus. This nucleus contains most of the atom’s mass and is composed of protons and neutrons (except for common hydrogen which has only one proton).

Detailed explanation-3: -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-4: -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-5: -An atomic nuclei consist of positively charged particles (protons) and uncharged particles (neutrons). An atom is composed of a positively charged nucleus, and electrons revolving around it in defined circular orbits. The nucleus is very small/dense when compared to the rest of the atom.