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Mathematics, 08.02.2021 18:30 Raymond123
If An atom has 10 protons, 11 neutrons, and 9 electrons. What is the atomic number of this atom?
A) 9
B) 10
C) 11
D) 21
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If An atom has 10 protons, 11 neutrons, and 9 electrons. What is the atomic number of this atom?
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