Across
- 4. This is an element with 47 protons.
- 5. This is the only element with no neutrons,
- 8. In the center of the atom, the protons and neutrons are here.
- 9. This element has an atomic mass of 23 atu
- 10. this is a nonmetal with an atomic number of six
- 14. this is the heaviest element on the periodic table
- 15. This element is a noble gas with 10 neutrons
Down
- 1. This is the lightest alkaline metal
- 2. this element is used to make nuclear power
- 3. This is the first Noble Gas
- 6. The negatively charged particle
- 7. This is a transition metal with an atomic mass of 26
- 11. this is the element that joins with hydrogen to make water
- 12. This element has at atomic mass of approximately 35
- 13. The positively charged particle inside the nucleus