20 chemical elements list and their symbols
1. NEON – NE
2. GADOLINIUM – GD
3. SODIUM – NA
4. ARGON – AR
5. MERCURY – HG
6. SILICON – SI
7. VANADIUM – V
8. SULFUR – S
9. DARMSTADTIUM – DS
10. TUNGSTEN – W
11. TERBIUM – TB
12. MANGANESE – MN
13. COPERNICIUM – CN
14. ZIRCONIUM – ZR
15. RUBIDIUM – RH
16. URANIUM – U
17. NEPTUNIUM – NP
18. GERMANIUM – GE
19. CESIUM – CS
20. LANTHANUM – LA
