An electrically neutral atom of beryllium has four protons. what other facts do you know for sure about this atom?

I don't see any answer choices but you would know that it has it's normal amount of electrons and it has 4 neutrons (to match the protons) you would also know it's mass. (You can find the electrons or mass on a periodic table or Google)

one negative thing it that it can kill water animals. another negative thing is it can cause the destruction of ecosystem. one way water pollution can be reduced is to conserve energy.

plasma - state of matter made up of electrically charged particles