GENERAL KNOWLEDGE

Detailed explanation-1: -First, two hydrogen nuclei (1H) combine to form a hydrogen-2 nucleus (2H, deuterium) with the emission of a positive electron (e+, positron) and a neutrino (). The hydrogen-2 nucleus then rapidly captures another proton to form a helium-3 nucleus (3He), while emitting a gamma ray ().

Detailed explanation-2: -The first step in this process is the collision of two protons where proximity permits the strong nuclear force to bind them together. The resulting combination is not stable, and one of the protons will decay to become a neutron, and this forms a stable nucleus of deuterium. This step needs to occur twice.

Detailed explanation-3: -Deuterium formation The second step of the proton-proton cycle . This step involves the weak interaction because it involves the transmutation of one of the protons to a neutron in order to form deuterium. This process requires energy and produces a positron and an electron neutrino.

Detailed explanation-4: -In the first stage two protons combine and one of them converts into a neutron to form a nucleus of the heavy isotope of hydrogen known as deuterium.