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

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Important Questions on Nuclei

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Achieve CUET (UG) Physics Practice Book>Chapter 13 - Nuclei>Exercise>Q 85
Two lithium nuclei in a lithium vapour at room temperature do not combine to form a carbon necleus because 
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Achieve CUET (UG) Physics Practice Book>Chapter 13 - Nuclei>Exercise>Q 86
If the energy released in the fission of one nucleus is 200 MeV. Then the number of nuclei required per second in a power plant of 16 kW will be:
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Achieve CUET (UG) Physics Practice Book>Chapter 13 - Nuclei>Exercise>Q 87
Fusion reaction take place at a high temperature because
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Achieve CUET (UG) Physics Practice Book>Chapter 13 - Nuclei>Exercise>Q 88
In the nuclear fusion reaction, 12H+13H→24He+n, given that the magnitude of repulsive potential energy between the two nuclei is approximately 7.7×10-14 J. The temperature at which the gases must be heated to initiate the reaction is nearly [ Boltzmann's constant k=1.38×10-23 J K-1.]
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Achieve CUET (UG) Physics Practice Book>Chapter 13 - Nuclei>Exercise>Q 89
The explosion of atom bomb is based on the principle of
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Achieve CUET (UG) Physics Practice Book>Chapter 13 - Nuclei>Exercise>Q 90
If mass of the fissionable material is less than the critical mass, then,
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Achieve CUET (UG) Physics Practice Book>Chapter 13 - Nuclei>Exercise>Q 91
If mass of the fissionable material is less than the critical mass, then
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Achieve CUET (UG) Physics Practice Book>Chapter 13 - Nuclei>Exercise>Q 92
In fission reactor heavy water is used as