Question

if an atom has one electron and one proton. state the change on the atom justify your answers

Answer 1

Protons are positively charged and each proton has +1 charge,
whereas electrons are negatively charged and have -1 charge.
Thus total charge on atom = charge of proton + charge of electron
= +1 + (-1)
= 0
Thus the overall charge is neutral.

Answer 2

there is no change in atom because it is neutral.(-1+1=0)