How are electrically neutral atoms different than the ions they form?

They have the same number of protons but a different number of electrons.

They have the same number of protons but a different number of neutrons.

They have the same number of electrons but a different number of protons.

They have a different number of protons and electrons.

How are electrically neutral atoms different than the ions they form They have the same number of protons but a different number of electrons They have the same class=