Alkali Metals are the chemical elements found in group 1 of the periodic table of elements. They are: lithium, sodium, potassium, rubidium, cesium, and francium.
Since they are all in the same group, they do have similar properties and characteristics. Here are top 10 interesting facts about alkali metals that everybody should know.
The word “alkali” derives from the Arab word for “ashes”.
Alkali metals are very reactive (they are always ready to lose the only one electron they have on their outer shell) therefore they can’t be found freely in nature.
Cesium and francium are the most reactive alkali metals. Due to their reactivity alkali metals are usually stored in oil.
All alkali metals react violently with water.
Alkali metals are shiny, soft (can be cut with a knife), malleable, ductile, and good conductors of heat and electricity.
Alkali metals oxidize when exposed to air.
Alkali metals have low density compared with other metals.
Sodium is the most abundant alkali metal on Earth followed by potassium and lithium.
Cesium and rubidium are used to create atomic clocks, the most accurate clocks in the world.
Sodium and potassium are found in human body and they are absolutely essential for life.
Ununennium (also known as eka-francium or element 119) is predicted to be the seventh alkali metal but it hasn’t been synthesized yet.