The atomic number is 11 and mass number is 23. It is a positively charged cation because protons exceed electrons by one. Its electronic configuration is 2, 8 and the species is a sodium ion, Na+.
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The atomic number is 11 and mass number is 23. It is a positively charged cation because protons exceed electrons by one. Its electronic configuration is 2, 8 and the species is a sodium ion, Na+.