Across
- 3. a colorless and non-flammable gas
- 6. an inorganic compound with the formula NaF
- 8. a member of the halogens group on the periodic table
- 9. a colorless gas at normal temperatures and pressures.
- 10. the chemical formula F⁻
Down
- 1. commonly known as table salt
- 2. the simplest of all elements.
- 4. has five valence electrons
- 5. an inorganic chemical compound of nitrogen and hydrogen
- 7. a colorless volatile flammable liquid