Question

For an electrically neutral atom, the number of protons is equal to:

the number of neutrons

the sum of neutrons + electrons

the difference of neutrons − electrons

the number of electrons

Answer 1

electrically neutral means that it has no charge, that the number of positive charges are equal to the negative charges.

a proton carries one positive charge each (+1)

a neutron carries no charge

one electron carries one negative charge (-1)