What are the six most common elements in the universe? H, He, C, N, O, Ne What are the four most common elements in living cells? H, C, N, O (We invited the

What are the six most common elements in the universe? H, He, C, N, O, Ne What are the four most common elements in living cells? H, C, N, O (We invited the noble gasses to play, too, but they said something along the lines of, "Go away you peasants you'll mess up our perfect orbitals.")