periodic table first 20
Terms
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- Al
- Aluminimum
- Ar
- Argon
- B
- Boron
- Be
- Beryllium
- C
- Carbon
- Ca
- Calcium
- Cl
- Chlorine
- F
- Fluorine
- H
- Hydrogen
- He
- Helium
- K
- Potassium
- Li
- Lithium
- Mg
- Magnesium
- N
- Nitrogen
- Na
- Sodium
- Ne
- Neon
- O
- Oxygen
- P
- Phosphorus
- S
- Sulphur
- Si
- Silicon