Across
- 1. separates the metals from the non-metals
- 2. atom that has different number of protons/electrons
- 4. elements with properties of metals and non-metals
- 5. fluorine, chlorine, bromine, iodine and astatine.
- 6. refers to a horizontal row in the periodic table
- 8. an element that does not display the properties of a metal
- 9. weight of an atom
- 11. high electrical conductivity readily loses electrons to form +ions
- 12. a negatively charged ion
- 13. located on the outermost shell of a atom
- 14. a column of elements in the periodic table
Down
- 1. a standard way of writing large and small numbers\
- 3. helium, neon, argon etc.
- 7. number of protons in the nucleus
- 10. 6.02x10^23