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en.wikipedia.org/wiki/Sodium_layer

The sodium layer is a layer within the Earth's mesosphere of neutral atoms of sodium. ... Astronomers have found the sodium layer to be useful for creating an ...

en.wikipedia.org/wiki/Sodium

Sodium is a chemical element with symbol Na (from Latin natrium) and atomic number 11. ... Sodium is the sixth most abundant element in the Earth's crust, and exists in ..... Because of its high reactivity, it is never found as a pure element.

www.ducksters.com/science/chemistry/sodium.php

Where is sodium found on Earth? Sodium is the sixth most abundant element on Earth. It is never found in its pure form because it is so reactive. It is only found ...

education.jlab.org/itselemental/ele011.html

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 ...

www.reference.com/science/sodium-found-earth-b3c15b021fda9a0a

Sodium is extremely abundant, composing about 3 percent of the Earth's crust, but it is never found in its pure form as sodium metal. This is because of its ...

chem.libretexts.org/Core/Inorganic_Chemistry/Descriptive_Chemistry/Elements_Organized_by_Block/1_s-Block_Elements/Group__1%3A_The_Alkali_Metals/Chemistry_of_Sodium

Dec 3, 2016 ... Sodium is metallic element found in the first group of the periodic table. As the sixth most abundant element in the Earth's crust, sodium ...

www.livescience.com/28820-sodium.html

Feb 19, 2015 ... Sodium is an alkali metal, found on the leftmost side of the Periodic ... Sodium is the sixth-most abundant element on Earth, according to the ...

www.webelements.com/sodium/geology.html

Sodium is never found as the free element ("native") in nature as it is so reactive. Sodium is the sixth most abundant element in the earth's crust at about 2.6 ...

mineralseducationcoalition.org/elements/sodium

Much like lithium, sodium is a light, very soft, silvery-white metal. ... Discovered By ... the fourth most abundant element on the Earth and very common in stars.

chlorine.americanchemistry.com/Science-Center/Chlorine-Compound-of-the-Month-Library/Sodium-Chloride-NaCl-Salt-of-the-Earth

Halite, sodium chloride, is found naturally in huge geologic deposits of salt minerals left over from the slow evaporation of ancient seawater. (Are you surprised?