Multiple ChoiceWhich is a characteristic of the part of the atom marked 'a', assuming 'a' refers to the nucleus?48views
Multiple ChoiceThe smallest particle of an element that retains the properties of that element is a(n):62views
Multiple ChoiceThe atomic number of magnesium is 12. This means that its nucleus must contain:79views
Multiple ChoiceNeon is a gas made up of only one type of atom. Which term best describes neon?63views