The Alkali metals are the most reactive metals in the periodic table. From Lithium and its sizzling reaction with water all the way to the explosive caesium. Alkali metals have one electron in their outer shell and tend to donate this electron in reactions with non metals to form ionic compounds. Alkali metals increase in reactivity and owe their high reactivity to the large atomic radius the lone electron is far from the nucleus. With relatively low ionisation energies group 1 metals are very reactive. Alkali metals will readily react with water to form hydroxides and react with oxygen during oxidation.
Alkali metals are located in group 1 of the periodic table. Have a single valence electron which is easily lost from the outer shell. Alkali metals react readily with water to form hydroxides and alkaline pH solutions.
The electron is the smallest sub atomic particle that make up the atom. Has a negative charge and is located in shells that orbit the nucleus
Outer electrons is the term given to the shell/energy level furthest from the nucleus containing the electron furthest from the nucleus
Atomic radius is the distance measured from the nucleus to the outer valence electrons – measured in pm picometres which is 1x10-12 m
A hydroxide is a compound that contains an oxygen and. hydrogen atom bonded together an ion to form the OH- ion which is known as the hydroxide ion
Oxidation is the term given to the process when an atom loses an electron to become a positively charged ion
An ionic compound is a bond that forms between metals and non metals to form a large ionic lattice