Sodium (symbol Na) is element number 11 of the periodic table and belongs to the “Alkali metal” category. Its atomic mass is about 22.99, and its phase under standard conditions is Solid. This element sits in period 3 and group 1 of the periodic table, and its electrons are arranged in shells of 2, 8, 1. The short electron configuration of Sodium is [Ne] 3s¹. Known uses of Sodium include Table salt, Sodium vapor lamps and Reactor coolant.
The electron configuration of Sodium (Na), with 11 electrons, is shown below. The last shell (shell 3) is highlighted:
Distribution of 11 electrons of Sodium across shells K to M:
The alkali metals are the group 1 elements (excluding hydrogen): soft, shiny and highly reactive metals that react violently with water and are never found free in nature.
The atomic number of Sodium (Na) is 11; that is, every atom of it has 11 protons.
The electron configuration of Sodium (Na) is 1s² 2s² 2p⁶ 3s¹; in short form it is [Ne] 3s¹, and its last shell is 3s¹.
The chemical symbol of Sodium is Na.
Sodium is located in period 3 and group 1 and belongs to the “Alkali metal” category.
The atomic mass of Sodium is about 22.99 (atomic mass units).
The phase of Sodium under standard conditions is Solid.
Uses of Sodium include Table salt, Sodium vapor lamps and Reactor coolant.
Sodium was discovered by Humphry Davy in 1807.
Lithium (Li)Potassium (K)Rubidium (Rb)Cesium (Cs)Francium (Fr)
Hydrogen (H)Lithium (Li)Potassium (K)Rubidium (Rb)Cesium (Cs)Francium (Fr)
