Which group contains elements with 4 electrons what period is this element located in

Ithink it’s a forms a perfect sphere or a smooth flattened oval

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