Question

What Are the First 20 Elements.

Answer 1

In order of increasing atomic number, the first 20 elements and their symbols are:

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. Aluminum (Al)
14. Silicon (Si)
15. Phosphorus (P)
16. Sulfur (S)
17. Chlorine (Cl)
18. Argon (Ar)
19. Potassium (K)
20. Calcium (Ca)

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Answer 2

Hydrogen

Helium

lithium

beryllium

boron

carbon

nitrogen

oxygen

fluorine

neon

sodium

magnesium

aluminum

silicon

phosphorous

Sulphur

chlorine

argon

potassium

calcium