Categories > Nuclei > Nucleus > If the mass number of an atom is $A = 40$ and its electron configuration is $1{s^2},\;2{s^2},\;2{p^6},\;3{s^2},\;3{p^6}$, the number of neutrons and protons in its nucleus will be

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Question: If the mass number of an atom is $A = 40$ and its electron configuration is $1{s^2},\;2{s^2},\;2{p^6},\;3{s^2},\;3{p^6}$, the number of neutrons and protons in its nucleus will be


1) 22, 18
2) 18, 22
3) 20, 20
4) 18, 18
Solution: Explanation: No Explanation
Nucleus Nuclear Reaction Modern Physics

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