What are the first 20 elements of the periodic table?

Answer:
  1. Hydrogen (H)
  2. Helium (He)
  3. Lithium (Li)
  4. Beryllium (Be)
  5. Boron (B)
  6. Carbon (C)
  7. Nitrogen (N)
  8. Oxygen (O)
  9. Fluorine (F)
  10. Neon (Ne)
  11. Sodium (Na)
  12. Magnesium (Mg)
  13. Aluminium (Al)
  14. Silicon (Si)
  15. Phosphorous (P)
  16. Sulphur (S)
  17. Chlorine (Cl)
  18. Argon (Ar)
  19. Potassium (K)
  20. Calcium (Ca)
First answer by Dude guy120. Last edit by Aark. Contributor trust: 5 [recommend contributor recommended]. Question popularity: 63 [recommend question].