Atomic Number: 1
Element Symbol: H
Average Atomic Mass: 1.01
Element Symbol: H
Average Atomic Mass: 1.01
1. Hydrogen
Atomic Number: 2
Element Symbol: He
Average Atomic Mass: 4
Element Symbol: He
Average Atomic Mass: 4
2. Helium
Atomic Number: 3
Element Symbol: Li
Average Atomic Mass: 6.94 or 7
Element Symbol: Li
Average Atomic Mass: 6.94 or 7
3. Lithium
Atomic Number: 4
Element Symbol: Be
Average Atomic Mass: 9.01 or 9
Element Symbol: Be
Average Atomic Mass: 9.01 or 9
4. Berylium
Atomic Number: 5
Element Symbol: B
Average Atomic Mass: 10.81 or 11
Element Symbol: B
Average Atomic Mass: 10.81 or 11
5. Boron
Atomic Number: 6
Element Symbol: C
Average Atomic Mass: 12.01 or 12
Element Symbol: C
Average Atomic Mass: 12.01 or 12
6. Carbon
Atomic Number: 7
Element Symbol: N
Average Atomic Mass: 14.01 or 14
Element Symbol: N
Average Atomic Mass: 14.01 or 14
7. Nitrogen
Atomic Number: 8
Element Symbol: O
Average Atomic Mass: 16
Element Symbol: O
Average Atomic Mass: 16
8. Oxygen
Atomic Number: 9
Element Symbol: F
Average Atomic Mass: 19
Element Symbol: F
Average Atomic Mass: 19
9. Fluorine
Atomic Number: 10
Element Symbol: Ne
Average Atomic Mass: 20.18 or 20
Element Symbol: Ne
Average Atomic Mass: 20.18 or 20
10. Neon
Atomic Number: 11
Element Symbol: Na
Average Atomic Mass: 22..99 or 30
Element Symbol: Na
Average Atomic Mass: 22..99 or 30
11. Sodium
Atomic Number: 12
Element Symbol: Mg
Average Atomic Mass: 24.31 or 24
Element Symbol: Mg
Average Atomic Mass: 24.31 or 24
12. Magnesium
Atomic Number: 13
Element Symbol: Al
Average Atomic Mass: 26.98 or 27
Element Symbol: Al
Average Atomic Mass: 26.98 or 27
13. Aluminum
Atomic Number: 14
Element Symbol: Si
Average Atomic Mass: 28.09 or 28
Element Symbol: Si
Average Atomic Mass: 28.09 or 28
14. Silicon
Atomic Number: 15
Element Symbol: P
Average Atomic Mass: 30.97 or 31
Element Symbol: P
Average Atomic Mass: 30.97 or 31
15. Phosphorus
Atomic Number: 16
Element Symbol: S
Average Atomic Mass: 32.07 or 32
Element Symbol: S
Average Atomic Mass: 32.07 or 32
16. Sulfur
Atomic Number: 17
Element Symbol: Cl
Average Atomic Mass: 35.45 or 36
Element Symbol: Cl
Average Atomic Mass: 35.45 or 36
17. Chlorine
Atomic Number: 18
Element Symbol: Ar
Average Atomic Mass: 39.95 or 40
Element Symbol: Ar
Average Atomic Mass: 39.95 or 40
18. Argon
Atomic Number: 19
Element Symbol: K
Average Atomic Mass: 39.10 or 39
Element Symbol: K
Average Atomic Mass: 39.10 or 39
19. Potassium
Atomic Number: 20
Element Symbol: Ca
Average Atomic Mass: 40.08 or 40
Element Symbol: Ca
Average Atomic Mass: 40.08 or 40
20. Calcium
Atomic Number: 21
Element Symbol: Sc
Average Atomic Mass: 44.96 or 45
Element Symbol: Sc
Average Atomic Mass: 44.96 or 45
21. Scandium
Atomic Number: 22
Element Symbol: Ti
Average Atomic Mass: 47.87 or 48
Element Symbol: Ti
Average Atomic Mass: 47.87 or 48
22. Titanium
Atomic Number: 23
Element Symbol: V
Average Atomic Mass: 50.94 or 51
Element Symbol: V
Average Atomic Mass: 50.94 or 51
23. Vanadium
Atomic Number: 24
Element Symbol: Cr
Average Atomic Mass: 52
Element Symbol: Cr
Average Atomic Mass: 52
24. Chromium
Atomic Number: 25
Element Symbol: Mn
Average Atomic Mass: 54.94 or 55
Element Symbol: Mn
Average Atomic Mass: 54.94 or 55
25. Manganese
Atomic Number: 26
Element Symbol: Fe
Average Atomic Mass: 55.85 or 56
Element Symbol: Fe
Average Atomic Mass: 55.85 or 56
26. Iron
Atomic Number: 27
Element Symbol: Co
Average Atomic Mass: 58.93 or 59
Element Symbol: Co
Average Atomic Mass: 58.93 or 59
27. Cobalt
Atomic Number: 28
Element Symbol: Ni
Average Atomic Mass: 58.69 or 59
Element Symbol: Ni
Average Atomic Mass: 58.69 or 59
28. Nickel
Atomic Number: 29
Element Symbol: Cu
Average Atomic Mass: 63.55 or 64
Element Symbol: Cu
Average Atomic Mass: 63.55 or 64
29. Copper
Atomic Number: 30
Element Symbol: Zn
Average Atomic Mass: 65.39 or 65
Element Symbol: Zn
Average Atomic Mass: 65.39 or 65
30. Zinc
