Helium is one of the naturally occurring elements on the periodic table. It is a colorless gas that is often used to fill balloons. On helium atom is made up of 2 protons, 2 neutrons, and 2 electrons. You can find more information here: http://www. chemicalelements. com/elements/he. html
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Helium is actually an element on the periodic table. It is a noble gas, meaning that it has a full outer shell, which is 2 electrons, so it is made up of 2 electrons, 2 neutrons, and 2 protons.