How many neutrons are present in an atom with t... - JAMB Chemistry 2022 Question
How many neutrons are present in an atom with the mass number and atomic number 37 and 17 respectively?
A
18
B
20
C
37
D
17
correct option: b
mass number = number of neutrons + atomic number
number of neutrons = mass number - atomic number
=> 37 - 17 = 20
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