Periodic Table Period 3 (Na to Ar) Menu
Physical and atomic properties of the elements
Discusses the trends in first ionisation energy, atomic radius, electronegativity, conductivity, melting point and boiling point as you go across the period from sodium to argon.
Reactions of the Period 3 elements
The reactions of the elements from sodium to argon with water, oxygen and chlorine.
Physical properties of the oxides
Discusses the link between the physical properties of the oxides of the elements from sodium to chlorine and their structure and bonding.
Acid-base behaviour of the oxides
Reactions of the oxides with water, and their acid-base behaviour.
Chlorides of the Period 3 elements
The physical properties of the chlorides of the elements from sodium to sulfur, their structure and bonding, and their reactions with water.
Hydroxides of the Period 3 elements
The acid-base behaviour of the "hydroxides" (using the term in the widest possible sense) of the Period 3 elements.