Q. Outside a nucleus
A) Neutron is stable
B) Proton and neutron both are stable
C) Neutron is unstable
D) Neither neutron nor proton is stable
Explanation
(c) Out side the nucleus, neutron is unstable (life $- 932\ s$)
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.