Home Physics Atomic and Nuclear Physics Nucleus, Nuclear Reaction Two lithium 6 Li nuclei in a lithium vapour …
Physics Atomic and Nuclear Physics Nucleus, Nuclear Reaction MCQ (Single Correct)

Two lithium 6 Li nuclei in a lithium vapour at room temperature do not combine to form a carbon 12 C nucleus because

A
a lithium nucleus is more tightly bound than a carbon nucleus
B
carbon nucleus is an unstable particle
C
it is not energetically favorable
D
Coulomb repulsion does not allow the nuclei to come very close

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Text Solution

Verified by Experts
The correct answer is:
D

Two Li nuclei are positively charged, so they strongly repel each other due to Coulomb force. At room temperature they do not have enough kinetic energy to overcome this repulsion and come close enough for nuclear fusion.

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