Grade 12Modern PhysicsIn stars, when two hydrogen atoms combine to form helium, where does the neutron come from for the helium, since hydrogen doesn`t have any neutrons! Palash Agarwal 12 Years agoGrade 12
Saurabh SinghApproved Tutor Answer12 Years agoSo its not hydrogen but its isotopes participate in the fusion reaction Thanks & Regards Saurabh Singh, askIITians Faculty B.Tech. IIT Kanpur