Question

which reaction is not a part of proton Proton cycle​

Answer 1

Answer:

may be 2nd option is not a part of proton cycle

Answer 2

Answer:

The proton-proton chain is, like a decay chain, a series of reactions. The product of one reaction is the starting material of the next reaction. There are two such chains leading from Hydrogen to Helium in the Sun. One chain has five reactions, the other chain has six.