What would happen if a proton were added to the nucleus of the atom? (check all that apply)

it would become a different atom.

it would add to the mass by 1.

its charge would increase by 1

the charge would be reduced by 1.

It would become a different element.

Explanation:

When you change the number of protons i.e, add a proton in the nucleus of an atom, you will change the atom from one element to a different element and also positive charge of the atom also increased by 1.

For example, adding a proton to the nucleus of an atom of hydrogen creates an atom of helium.

So, we conclude that by adding a proton the atom will change from one element to another element.

the answer is to check all of them! they all apply well at least i think so!

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.