Number of electrons in Na atom = Atomic number = 11
Number of electrons in Na+ ion = 1 1 – 1 = 10
Electronic configuration of Na+ ion: 2, 8
Question
Write the electronic configuration of a positively charged sodium ion (Na+). Atomic number of sodium is 11.
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💡 Some Related Questions
Complete the following gaps in the given table:
| Elements | Protons | Electrons | Neutrons | Atomic Number | Mass Number |
| A | – | – | 10 | 8 | – |
| B | 15 | – | – | – | 31 |
| C | 1 | – | – | – | 3 |
| D | – | 11 | 12 | – | – |
Composition of the nuclei of two atomic species ‘X’ and ‘Y’ are given below:
| X | Y | |
| Protons | 8 | 8 |
| Neutrons | 8 | 10 |
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