Teaching UP TGT Mock Test Series 2025 General Science Chemistry Structure of Atom

An atom of sodium has an atomic number of 11 and a mass number of 23. Which of the following statements is correct regarding number of protons, electrons and neutrons respectively?

1
11, 11, 11
2
11, 12, 12
3
11, 11, 12
4
11, 12, 11
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