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hernsl0263
01.07.2019 •
Chemistry
When nuclear fission a. it must be initiated by bombardment with neutrons. b. two nuclei combine to produce a heavier nucleus. c. it is a spontaneous reaction. d. the chain reaction that results cannot be controlled.
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Ответ:
Nuclear fission is a process in which a heavy nucleus is broken down into lighter nuclei.
Within a nucleus, the subatomic particles are held together by very strong forces of attraction. Neutrons which have the mass of a proton but no nuclear charges, is used to initiate fission reactions.
For example: The fission of U-235 into Barium (Ba-144) and Krypton (Kr- 89) is initiated by bombardment with neutron
₉₂U²³⁵ + ₀n¹ ⇒ ₉₂U²³⁶
₉₂U²³⁶ ⇒ ₅₆Ba¹⁴⁴ + ₃₆Kr⁸⁹ + 3₀n¹
Ans) A
Ответ:
Nuclear fission is a process in which a heavy nucleus is broken down into lighter nuclei.
Explanation:
Ответ:
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