IIT JEE , AIEEE Forum - Physics , Modern Physics

pawan_77

Q.the largest unstable nuleus is-

1.U-238

2.U-236

3.U-235

4.Pb-206

neeleshv

I think the question is the largest stable nucleus and not unstable. If what i think is correct,then the answer is Pb²⁰⁶

^{Please rate me if i am correct}

pawan_77

why do change question

kiran

Hi

The answer is U 236 . Pb 206 is most stable. Its smaller than others .

99% of uranium in the world is U 238 which is pretty stable. So its enriched that is converted into U 235 before using in nuclear reactions.

But U 236 is formed after neutron capture of U 235 . U 236 is highly energized and is highly unstable.

So answer is U 236.

Cheers!