Hi Christopher,
To expand on what’s nuclear fission is, it’s the reaction where you split an atom into two or more atoms by bombarding a neutron into it. However, only heavier elements (that have 92 or more protons) can undergo nuclear fission as they are unstable and easy enough to ‘break’ them.
The ones you listed are lighter elements (with less than 92 protons) and are very stable, hence they wouldn’t undergo fission. And if you split them, it would only absorb energy rather than release it.
Maybe you can fuse hydrogen to create a fusion reaction, but you’d need the temperature and pressure conditions to be like the one at the core of the Sun to do that.
Still, for the sake of curiosity, you can get the total energy from the mass of the human body. Considering an average of 60 kg, using e = mc2, the energy from the elements that make up an average human body is 5.3 x 1018 J. Compared to this, the energy from the Tsar Bomba detonation is 2.1 x 1017 J.
