Periodic Table Elements 1-20

Flashcards covering the first twenty elements of the periodic table, including their atomic numbers and symbols.

Hydrogen

$$H$$

Helium

$$He$$

Lithium

$$Li$$

Beryllium

$$Be$$

Boron

$$B$$

Carbon

$$C$$

Nitrogen

$$N$$

Oxygen

$$O$$

Fluorine

$$F$$

Neon

$$Ne$$

Sodium

$$Na$$

Magnesium

$$Mg$$

Aluminum

$$Al$$

Silicon

$$Si$$

Phosphorus

$$P$$

Sulfur

$$S$$

Chlorine

$$Cl$$

Argon

$$Ar$$

Potassium

$$K$$

Calcium

$$Ca$$