Question

In Carbon-Nitrogen fusion cycle , protons are fused to form a helium nucleus, positrons and release some energy.The number of protons fused and the number of positrons released in this process respectively are

• A. 4,4
• B. 4,2
• C. 2,4
• D. 4,6

Answer 1

The correct option is B 4,2

Overall reaction of Carbon - Nitrogen cycle is
$4_1^{1}H{\to }_2^{4}He+2{(}_1^{0}e)+Q$
So, 4 protons are fused to give 2 positrons.