write the first 20 with its symbol and the chemical names ?

Asked by  | 27th Oct, 2012, 12:15: PM

Expert 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)

Answered by  | 27th Oct, 2012, 10:24: PM

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