Here's why:
* Isotopes are atoms of the same element that have the same number of protons (atomic number) but different numbers of neutrons. This difference in neutron count affects the atom's mass, but not its charge.
* Charge is determined by the balance between protons (positive charge) and electrons (negative charge). Isotopes have the same number of protons and, in a neutral atom, the same number of electrons.
Therefore, isotopes are electrically neutral.
Example: Carbon-12 and Carbon-14 are isotopes of carbon. They both have 6 protons, but Carbon-12 has 6 neutrons, while Carbon-14 has 8 neutrons. Both isotopes are still neutral atoms.
