Sodium ions are positively charged particles formed when sodium atoms lose one electron. This process is essential for various biological functions, including nerve impulse transmission and muscle contraction. Sodium ions are abundant in nature and play a crucial role in maintaining fluid balance in the body. In the environment, sodium ions are commonly found in salt, specifically in the form of sodium chloride. They are vital for many organisms, as they help regulate cellular processes and contribute to the overall homeostasis of living systems. Sodium ions are also important in industrial applications, such as in the production of sodium hydroxide.