Across
- 1. The symbol of the element with atomic number 10 in the periodic table.
- 4. The mass number of Lithium (symbol Li) in the periodic table.
- 6. The atomic number of Oxygen (symbol O) in the periodic table.
- 8. The name of the particle that has a positive charge and we can find in the nucleus.
Down
- 2. Atoms that have the same number of protons are of the same ____________.
- 3. The symbol of the element with atomic number 2 in the periodic table.
- 5. The name of the element with atomic number 26 in the periodic table.
- 7. The name of the element with atomic number 197 in the periodic table.