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Question
How many neutrons are there in 23892U?
How many neutrons are there in 23892U?
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Solution
The correct option is B 146
Mass number = Number of neutrons + Atomic number (number of protons)
Number of neutrons = Mass number - Atomic number
Mass number of U = 238
Atomic number of U = 92
Therefore, number of neutrons of U
= 238 - 92
= 146
Mass number = Number of neutrons + Atomic number (number of protons)
Number of neutrons = Mass number - Atomic number
Mass number of U = 238
Atomic number of U = 92
Therefore, number of neutrons of U
= 238 - 92
= 146
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