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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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