Sodium - Wikipedia
Sodium was first isolated by Humphry Davy in 1807 by the electrolysis of sodium hydroxide. Among many other useful sodium compounds, sodium hydroxide (lye) is used in soap …
Sodium | Facts, Uses, & Properties | Britannica
Dec 4, 2025 · sodium (Na), chemical element of the alkali metal group (Group 1 [Ia]) of the periodic table. Sodium is a very soft silvery-white metal. Sodium is the most common alkali …
Sodium - Element information, properties and uses | Periodic ...
Sodium is essential to all living things, and humans have known this since prehistoric times. Our bodies contain about 100 grams, but we are constantly losing sodium in different ways so we …
Periodic Table of Elements: Los Alamos National Laboratory
Sodium is the fourth most abundant element on earth, comprising about 2.6% of the earth's crust; it is the most abundant of the alkali group of metals. It is now obtained commercially by the …
Sodium: Benefits, Risks, and Sources Explained - Health
Dec 19, 2025 · Sodium is a mineral that helps regulate blood pressure and nerve function. Most people get more sodium than they need, which may increase the risk of heart disease.
Hyponatremia - Symptoms and causes - Mayo Clinic
Jul 18, 2025 · Hyponatremia is the term used when your blood sodium is too low. Learn about symptoms, causes and treatment of this potentially dangerous condition.
About Sodium and Health | Salt | CDC
Jan 31, 2024 · Your body needs a small amount of sodium to work properly, but too much sodium is bad for your health. While sodium has many forms, most sodium we consume is from salt.