Many transuranium elements, such as neptunium-240, have very short half-lives. (For 24 Np, the halfr-life is 62 minutes However, some, like uranium-233 (half-life is 1.59 x 10° years), have relatively long half-lives. Use the masses given the following table to calculate the change in energy when I mole of 240Np nuclei and I mole of 2U nuclei are each formed from their respective number of protons and neutrons. 233 Atom or Particle Atomic Mass Neutron 1.67493 x 10-24 g Proton 1.67262 x 10-24 Electron 9.10939 x 10-28 240 Np 3.98623 x 1022. 233U 3.86972 x 10 22 g (Since the masses of 240Np and 3 U are atomic masses, they each include the mass of the electrons present. The mass of the nucleus will be the atomic mass minus the mass of the electrons.) AB(u) -
Many transuranium elements, such as neptunium-240, have very short half-lives. (For 24 Np, the halfr-life is 62 minutes However, some, like uranium-233 (half-life is 1.59 x 10° years), have relatively long half-lives. Use the masses given the following table to calculate the change in energy when I mole of 240Np nuclei and I mole of 2U nuclei are each formed from their respective number of protons and neutrons. 233 Atom or Particle Atomic Mass Neutron 1.67493 x 10-24 g Proton 1.67262 x 10-24 Electron 9.10939 x 10-28 240 Np 3.98623 x 1022. 233U 3.86972 x 10 22 g (Since the masses of 240Np and 3 U are atomic masses, they each include the mass of the electrons present. The mass of the nucleus will be the atomic mass minus the mass of the electrons.) AB(u) -
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![Many transuranium elements, such as neptunium-240, have very short half-lives. (For 240 Np, the half-life is 62 minutes.)
However, some, like uranium-233 (half-life is 1.59 x 10° years), have relatively long half-lives. Use the masses given in
the following table to calculate the change in energy when 1 mole of 240 Np nuclei and I mole of 23U nuclei are each
formed from their respective number of protons and neutrons.
Atom or Particle
Atomic Mass
Neutron
1.67493 x 10-24 g
Proton
1.67262 x 10-24 g
Electron
9.10939 x 10-28
240 Np
3.98623 x 102
233 U
3.86972 x 10 2"g
(Since the masses of 240 Np and 23 U are atomic masses, they each include the mass of the electrons present. The mass
of the nucleus will be the atomic mass minus the mass of the electrons.)
240
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Transcribed Image Text:Many transuranium elements, such as neptunium-240, have very short half-lives. (For 240 Np, the half-life is 62 minutes.)
However, some, like uranium-233 (half-life is 1.59 x 10° years), have relatively long half-lives. Use the masses given in
the following table to calculate the change in energy when 1 mole of 240 Np nuclei and I mole of 23U nuclei are each
formed from their respective number of protons and neutrons.
Atom or Particle
Atomic Mass
Neutron
1.67493 x 10-24 g
Proton
1.67262 x 10-24 g
Electron
9.10939 x 10-28
240 Np
3.98623 x 102
233 U
3.86972 x 10 2"g
(Since the masses of 240 Np and 23 U are atomic masses, they each include the mass of the electrons present. The mass
of the nucleus will be the atomic mass minus the mass of the electrons.)
240
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