What are the main parts of the nucleus of an atom?

choose all answers that are correct.

a.

electrons

b.

protons

c.

neutrons

d.

photons
what are the main parts of the nucleus of an atom? choose all answers that are correct.

Hydrogenation reactions, in which h2 and an "unsaturated" organic compound combine, are used in the food, fuel, and polymer industries. in the simplest case, ethene (c2h4) and h2 form ethane (c2h6). if 140 kj is given off per mole of c2h4 reacting, how much heat (in mj) is released when 12 kg of c2h6 forms?