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Hydrogen

Helium

Lithium

Beryllium

Boron

Carbon

Nitrogen

Oxygen

Fluorine

Neon

Sodium

Magnesium

Aluminum

Silicon

Phosphorus

Sulfur

Chlorine

Argon

Potassium

Calcium

Scandium

Titanium

Vanadium

Chromium

Manganese

Iron

Cobalt

Nickel

Copper

Zinc

Gallium

Germanium

Arsenic

Selenium
Symbol: Se
Atomic Mass: 78.96
Atomic Number: 34

Bromine

Krypton

Rubidium

Strontium

Yttrium

Zirconium

Palladium

Silver

Tin

Iodine

Cesium

Barium

Osmium

Gold

Mercury

Lead
