Chemistry world

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Across
  1. 3. I can convert common metals to something more valuable
  2. 4. I was discovered by an alchemist when he was experimenting to create the philosophers stone
  3. 5. You can't break our friendship that easily
  4. 7. I was discovered in 1985 as the 3rd incarnation of carbon
  5. 9. colourless acid containing 3 nitrogen atoms
  6. 11. Inhale me, I make you happy but if you inhale more, that's when I turn uncanny
  7. 12. I make up the heart of the place you live in
  8. 13. I don't have friends, but I'll be strong connecting me with myself so many times
  9. 14. I'm neither electropositive nor electronegative
  10. 15. I smell like a barn contain hay, but beware i have killed many once upon a time
  11. 17. I am either used to facilitate a reaction or to detect something through tests
  12. 18. I have a positive attitude
Down
  1. 1. I am the king of cuisines
  2. 2. we are too lazy to interact
  3. 5. A ferromagnetic substance that forms complexes more than any other element
  4. 6. I am often used for detecting something in archaeology department
  5. 7. A ligand that shows variable denticity
  6. 8. I am a greater absorber of gamma rays
  7. 10. I won't react but products are formed easily
  8. 16. I have the potential to increase the dopamine levels in the body