Question

Write three characteristics of nuclear forces.

Answer 1

Hint: In this question use the concept that nuclear force is the one responsible for binding up the nucleus as the nucleus has large number of neutrons and protons emended inside it and thus there is severe force of repulsion within the nucleus and thus for its stability a force is needed that binds them together. This will help approaching the problem.

Complete step-by-step answer:
Nuclear force is a force that acts between the protons and the neutrons of a nuclei.
It is also called a force of attraction that holds the protons and neutrons in a nucleus together.
As we all know that protons have a charge of +1e and neutrons are charged less so they experience an electric force that tends to push them apart, but at short range this attractive nuclear force is strong enough to overcome this electromagnetic force.
Thus the nuclear force binds or holds the nucleons into an atomic nuclei.
Characteristics of a nuclear force
$\left( i \right)$ It is attractive in nature but with a repulsive core, this is the reason that the nucleus is held together without collapsing in itself.
$\left( {ii} \right)$ It is identical for all nucleons.
$\left( {iii} \right)$ At a particular distance (i.e. less than 0.7 femtometer, 1 femtometer = $1 \times {10^{ - 15}}$meter) this force becomes repulsive, it is one of the most interesting properties of nuclear force because of this repulsive component of the force the size of the nucleus is decides.
So this is the required answer.

Note – The main question is how this nuclear force comes into existence, talking at the fundamental level the nucleons inside nucleus have quarks and a string force acts between these quarks moreover inside nucleus there are gluons so these gluons quarks into the protons and the neutrons.