Exercise on Isotopes: Solutions
Magnesium (Mg) has 3 isotopes with mass numbers 24, 25, and 26.
Questions:
- Write the complete chemical symbol for each of them.
- How many neutrons are in a nuclide of each isotope?
Solution:
| Symbol | 12Mg24 | 12Mg25 | 12Mg26 |
| # Protons | 12 | 12 | 12 |
| # Neutrons | 12 | 13 | 14 |
| # Electrons | 12 | 12 | 12 |
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Date of last modification: Summer , 2019