What happens in the proton-proton chain?
A)Two protons are fused to make a helium nucleus.
B)Three protons are fused to make a lithium nucleus.
C)A helium nucleus is split into four protons.
D)Four protons are fused to make a helium nucleus.

Question

Quizplus · Accepted Answer

In the proton-proton chain, four protons are fused together to form a helium nucleus. This process releases energy in the form of gamma-rays and positrons, which are particles with the same mass as electrons but a positive charge. The helium nucleus then goes on to participate in further nuclear reactions.

What Happens in the Proton-Proton Chain