For 10 points, give this number of hydrogen atoms in methane and the atomic number of beryllium.
The regular polyhedron that has this many faces is given the Schlafli symbol "3, 3," and the Klein group has this order. In evolutionary biology, this number of "Fs" denotes the basic drives needed for human (*) survival. The total power radiated from a surface is proportional to this power of absolute temperature according to the Stefan-Boltzmann Law, and an atom loses this many neutrons and protons total when undergoing alpha decay. There are this many fundamental forces. For 10 points, give this number of hydrogen atoms in methane and the atomic number of beryllium.
The regular polyhedron that has this many faces is given the Schlafli symbol "3, 3," and the Klein group has this order.
four