Did you hear the one about a chemist who was reading a book about helium?

Engineers have contribute to society in many ways like making the technology we use today or any type of power energy material

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