Group 3A Elements and Boron

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Across
  1. 5. Extremely toxic
  2. 6. Unusual structure (hydrogen bonds)
  3. 9. Boron Hydride geometry
  4. 13. Found in volcanic springs
Down
  1. 1. Behaves as a lewis acid
  2. 2. Radioactive element
  3. 3. Common physical property of group 3A elements
  4. 4. Nickname for boron hydrides
  5. 7. Impure and __ ; high heat reduction reaction
  6. 8. Melts in your hand
  7. 10. Used to make kitchen utensils and soda cans
  8. 11. Main element of today
  9. 12. Boron halide geometry
  10. 14. Pure and __ ; heat tantalum filament reaction