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Chapter 43: Q2P (page 1331)

The nuclide238Np requires4.2 MeVfor fission. To remove a neutron from this nuclide requires an energy expenditure of 5.0 MeV. Isfissionable by thermal neutrons?

Short Answer

Expert verified

The 237Npis fissionable by thermal neutrons.

Step by step solution

01

A concept and identification of given data:

The energy required for the fission of a nuclide varies with the number of the nucleon in the nuclide or the mass number of that nuclide.

The energy required for the fission of 238Npis E1=4.2MeV.

The energy required for the fission of 237Npis E2=5MeV.

02

Whether Np-237 is fissionable by thermal neutrons:

The mass number of 238Npis 237Npand energy required for fission is 4.2 MeV. The mass number of 237Np is 237 and energy required for fission is 5 Me V which is more than the energy required for fission of 238Npso the 237Npis fissionable by thermal neutrons.

Hence, the 237Npis fissionable by thermal neutrons.

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