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Summary Nuclear Fission
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The document describes about the reaction between elements to create a nuclear fission
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Nuclear Fission:The process of splitting up of a heavy unstable nucleus into two or more smaller,
lighter nuclei with the release of huge amount of energy is called nuclear fission.
When Uranium ( 235 92𝑈) is bombarded with slow neutron, an unstable compound
nucleus is formed which may break up into Barium ( 141 92
56𝐵𝑎 ) 𝑎𝑛𝑑 𝐾𝑟𝑦𝑝𝑡𝑜𝑛 ( 36𝐾𝑟)
and some neutrons are also released in this process. The schematic equation for
fission process is
𝟐𝟑𝟓
𝟗𝟐𝑼 + 𝟏𝟎𝒏 → ( 𝟐𝟑𝟔 ∗
𝟗𝟐𝑼) →
𝟏𝟒𝟏
𝟓𝟔𝑩𝒂 + 𝟗𝟐 𝟏
𝟑𝟔𝑲𝒓 + 𝟑 𝟎𝒏 + 𝑸
Figure-I, Nuclear fission.
Energy Released in Nuclear Fission:
A large amount of energy is released in nuclear fission reaction because the mass
of product nucleus is less than the masses of reactant nuclei.
The fission reaction for 92𝑈 235 is given as
𝟐𝟑𝟓 𝟏𝟒𝟏
𝟗𝟐𝑼 + 𝟏𝟎𝒏 → ( 𝟐𝟑𝟔 ∗
𝟗𝟐𝑼) → 𝟓𝟔𝑩𝒂 + 𝟗𝟐 𝟏
𝟑𝟔𝑲𝒓 + 𝟑 𝟎𝒏 + 𝑸
Given,
Mass of 235
92𝑈 = 235.0439334 𝑢
Mass of 10𝑛 = 1.0086654𝑢
Mass of 141
56𝐵𝑎 = 140.91394𝑢
92
Mass of 36𝐾𝑟 = 91.89734𝑢
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