No, it is attractive. The strong nuclear force, as it is known, is what overcomes the coloumbic repulsion of the positively charged protons, which would otherwise tend to fly apart due to the...
Well, there are 4 branches of the Proton-proton chain. But over all in this reaction, 4 Hydrogen's (protons) are turned into a helium atom (2 protons and 2 Neutrons) pp Branch I: Two protons collide,...