Periodic trends and Period 3 chemistry

By the end you’ll be able to

• Explain the trends across Period 3 in atomic radius, first ionisation energy, melting point, electrical conductivity and the transition from metallic to covalent character in terms of effective nuclear charge, shielding, atomic structure and bonding.
• Interpret the physical properties of the Period 3 elements from $\text{Na}$ to $\text{Ar}$ by relating giant metallic, giant covalent and simple molecular structures to melting point and conductivity.