LIFE SCIENCE

Detailed explanation-1: -The nucleus is the central part of the atom which contains electrically positive protons and electrically neutral neutrons. The strong nuclear force holds together protons and neutrons in the nucleus.

Detailed explanation-2: -In 1911, Ernest Rutherford discovered that at the core of every atom is a nucleus. 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.

Detailed explanation-3: -The nucleus is the small, dense region consisting of protons and neutrons at the center of an atom.

Detailed explanation-4: -Protons and neutrons are collectively called as nucleons, since they are in the nucleus of the atom..