elements

Hydrogen

The chemical element with atomic number $1$ and chemical symbol $H$, existing as the lightest element on the periodic table.

Helium

The chemical element with atomic number $2$ and chemical symbol $He$, a colorless and odorless noble gas.

Lithium

The chemical element with atomic number $3$ and chemical symbol $Li$, a soft, silvery alkali metal.

Beryllium

The chemical element with atomic number $4$ and chemical symbol $Be$, a relatively rare alkaline earth metal.

Boron

The chemical element with atomic number $5$ and chemical symbol $B$, a metalloid commonly used in semiconductors.

Carbon

The chemical element with atomic number $6$ and chemical symbol $C$, a nonmetal capable of forming vast organic molecules.

Nitrogen

The chemical element with atomic number $7$ and chemical symbol $N$, making up about $78\%$ of Earth's atmosphere.

Oxygen

The chemical element with atomic number $8$ and chemical symbol $O$, essential for aerobic respiration in living organisms.

Fluorine

The chemical element with atomic number $9$ and chemical symbol $F$, an extremely reactive halogen gas.

Neon

The chemical element with atomic number $10$ and chemical symbol $Ne$, a noble gas known for glowing reddish-orange in high-voltage discharge tubes.

Sodium

The chemical element with atomic number $11$ and chemical symbol $Na$, a highly reactive alkali metal.

Magnesium

The chemical element with atomic number $12$ and chemical symbol $Mg$, a shiny grey alkaline earth metal.

Aluminium

The chemical element with atomic number $13$ and chemical symbol $Al$, a low-density post-transition metal.

Silicon

The chemical element with atomic number $14$ and chemical symbol $Si$, a hard, crystalline metalloid widely used in electronics.

Phosphorus

The chemical element with atomic number $15$ and chemical symbol $P$, a reactive nonmetal found in multiple allotropic forms.

Sulfur

The chemical element with atomic number $16$ and chemical symbol $S$, a bright yellow crystalline nonmetal at room temperature.

Chlorine

The chemical element with atomic number $17$ and chemical symbol $Cl$, a yellow-green halogen gas.

Argon

The chemical element with atomic number $18$ and chemical symbol $Ar$, the third-most abundant gas in Earth's atmosphere.

Potassium

The chemical element with atomic number $19$ and chemical symbol $K$, a soft alkali metal that reacts vigorously with water.

Calcium

The chemical element with atomic number $20$ and chemical symbol $Ca$, an alkaline earth metal vital for cellular processes and bone structure.

Scandium

The chemical element with atomic number $21$ and chemical symbol $Sc$, a silvery-white metallic transition element.

Titanium

The chemical element with atomic number $22$ and chemical symbol $Ti$, a strong, low-density transition metal resistant to corrosion.

Vanadium

The chemical element with atomic number $23$ and chemical symbol $V$, a hard, silvery-grey transition metal used to strengthen steel alloys.

Chromium

The chemical element with atomic number $24$ and chemical symbol $Cr$, a steely-grey transition metal valued for its high corrosion resistance.

Manganese

The chemical element with atomic number $25$ and chemical symbol $Mn$, a hard, brittle transition metal used in industrial alloy production.

Iron

The chemical element with atomic number $26$ and chemical symbol $Fe$, a transition metal that forms the most common element on Earth by mass.

Cobalt

The chemical element with atomic number $27$ and chemical symbol $Co$, a hard, lustrous transition metal found in magnetic alloys.

Nickel

The chemical element with atomic number $28$ and chemical symbol $Ni$, a silvery-white lustrous transition metal with a slight golden tinge.

Copper

The chemical element with atomic number $29$ and chemical symbol $Cu$, a soft, ductile transition metal with very high thermal and electrical conductivity.

Zinc

The chemical element with atomic number $30$ and chemical symbol $Zn$, a transition metal commonly used in galvanization to protect steel from corrosion.

Gallium

The chemical element with atomic number $31$ and chemical symbol $Ga$, a soft post-transition metal that melts near body temperature.

Germanium

The chemical element with atomic number $32$ and chemical symbol $Ge$, a lustrous, hard metalloid used in transistors and fiber optics.

Arsenic

The chemical element with atomic number $33$ and chemical symbol $As$, a toxic metalloid that occurs in many minerals.

Selenium

The chemical element with atomic number $34$ and chemical symbol $Se$, a nonmetal with photoconductive properties.

Bromine

The chemical element with atomic number $35$ and chemical symbol $Br$, a red-brown halogen liquid at room temperature.

Krypton

The chemical element with atomic number $36$ and chemical symbol $Kr$, a colorless, odorless noble gas used in specialized lighting.