Where does the majority of the worlds population live?

Out of the continents, Asia is the most populous. To be more specific, China is the country with the most people, with over 1.4 billion people.

because the two particles have an equal charge, the charges will cancel out and give the atom an overall charge of 0. so, if at atom has 35 protons in the nucleus, we could expect it to have 35 electrons orbiting that nucleus.