As the given number of neutrons in the nucleus of a given atom of an element increases, the atomic number of that elementa. decreasesb. increasesc. remains the same

I know it is far late but the atom number remains the same

If a hydrogen atom is neutral, it must also have  one electron. an oxygen atom (o) has an atomic number of eight (8). this means a neutral oxygen atom has eight protons and eight electrons. the element actium (ac) has an atomic number of 89, so it has 89 protons and 89 electrons in a neutral atom