1. Na Atomic Number And Mass
2. Na Atomic Number And Mass Number
3. What Is An Atomic Number
4. Atomic Number Chart

Thus, since the atomic mass of iron is 55.847 amu, one mole of iron atoms would weigh 55.847 grams. The same concept can be extended to ionic compounds and molecules. One formula unit of sodium chloride (NaCl) would weigh 58.44 amu (22.98977 amu for Na + 35.453 amu for Cl), so a mole of sodium chloride would weigh 58.44 grams. Here is a list of the elements sorted by atomic number.Element nameElement symbolAtomic numberHydrogenH1HeliumHe2LithiumLi3. Sodium is a chemical element with symbol Na and atomic number 11. Classified as a n alkali metal, Sodium is a solid at room temperature.

The Element Sodium

[Click for Isotope Data]

Atomic Number: 11

Atomic Weight: 22.98976928

Melting Point: 370.95 K (97.80°C or 208.04°F)

Boiling Point: 1156 K (883°C or 1621°F)

Density: 0.97 grams per cubic centimeter

Phase at Room Temperature: Solid

Element Classification: Metal

Period Number: 3

Group Number: 1

Group Name: Alkali Metal

What's in a name? From the English word soda and from the Medieval Latin word sodanum, which means 'headache remedy.' Sodium's chemical symbol comes from the Latin word for sodium carbonate, natrium.

Say what? Sodium is pronounced as SO-dee-em.

History and Uses:

Although sodium is the sixth most abundant element on earth and comprises about 2.6% of the earth's crust, it is a very reactive element and is never found free in nature. Pure sodium was first isolated by Sir Humphry Davy in 1807 through the electrolysis of caustic soda (NaOH). Since sodium can ignite on contact with water, it must be stored in a moisture free environment.

Sodium is used in the production of titanium, sodamide, sodium cyanide, sodium peroxide, and sodium hydride. Liquid sodium has been used as a coolant for nuclear reactors. Sodium vapor is used in streetlights and produces a brilliant yellow light.

Sodium also forms many useful compounds. Some of the most common are: table salt (NaCl), soda ash (Na₂CO₃), baking soda (NaHCO₃), caustic soda (NaOH), Chile saltpeter (NaNO₃) and borax (Na₂B₄O₇·10H₂O).

Estimated Crustal Abundance: 2.36×10⁴ milligrams per kilogram

Na Atomic Number And Mass

Estimated Oceanic Abundance: 1.08×10⁴ milligrams per liter

Number of Stable Isotopes: 1 (View all isotope data)

Ionization Energy: 5.139 eV

Na Atomic Number And Mass Number

Oxidation States: +1

What Is An Atomic Number

Atomic Number Chart

For questions about this page, please contact Steve Gagnon.