Q. $\ _{92\ }U^{235}$ and $\ _{92}U^{238}$differ as
A) $\ _{92\ }U^{235}$has 2 protons less
B) $\ _{92\ }U^{238}$has 3 protons more
C) $\ _{92\ }U^{238}$has 3 neutrons more
D) None of the above
Explanation
(c) Number of protons in each =92
Number of neutrons $= 235 - 92 = 143$in $\ _{92}U^{235}$
$= 238 - 92 = 146$ in $\ _{92}U^{238}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.