What does a strong nuclear force do in an atom?
it repels electrons from other electrons.
it repels protons from other protons.
it attracts protons and neutrons.
it attracts protons and electrons.

Option (c) is the correct answer.

Explanation:

A nucleus of an atom contains protons and neutrons. Protons have positive charge and neutrons have no charge.

Since, same charge of each proton causes repulsion between each other due to which electrostatic force of repulsion increases in the nucleus. But, a strong force of attraction overcomes this force of repulsion and holds the protons and neutrons together.

This strong force that binds the protons and neutrons together is known as nuclear binding energy.

Thus, we can conclude that a strong nuclear force attracts protons and neutrons in an atom.

2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.

it would be d. henry moseley

hope this !

and sorry if i'm late. have a good rest of your day! : d