How are electrons assigned to the subshells? Animation Play

Ionic and atomic radii Student activity Play

Ionic radii of the s-block elements Student activity Play

Ionisation energy Student activity Play

Ionisation energy of the s-block elements Student activity Play

Irregularities in the first ionisation energy trend Animation Play

Melting points Animation Play

Number of orbitals Chart Play

Orbital energy and order of assignment to subshells Student activity Play

Orbital shapes Animation Play

Orbitals Student activity Play

Orbitals in the order of filling by electrons Whiteboard exercise Play

Periodic trends Student activity Play

Sodium cation Animation Play

The maximum number of electrons on the orbital Whiteboard exercise Play

The principal and azimuthal quantum numbers Animation Play

The structure of the periodic table Student activity Play

The structure of the periodic table – blocks Whiteboard exercise Play

The structure of the periodic table – blocks Student activity Play

The structure of the periodic table – groups (1) Student activity Play

Variable oxidation states – iron and copper Student activity Play