Periodic table trends

11 videos

Atomic radius trends on periodic table

VIDEO 9:40 minutes
How atomic radius is defined, and trends across a period and down a group.

Atomic and ionic radii

VIDEO 11:26 minutes
Explaining group and period trends in atomic and ionic radii.

Mini-video on ion size

VIDEO 3:04 minutes
Correcting a mistake and learning a bit about ion size

Ionization energy trends

VIDEO 10:02 minutes
Definition of ion and ionization energy, and trends in ionization energy across a period and down a group.

Group trend for ionization energy

VIDEO 10:19 minutes
Explaining trend in ionization energy down a group using concepts of nuclear charge, electron shielding, and distance of electrons from nucleus

Period trend for ionization energy

VIDEO 12:54 minutes
Explaining trends in ionization energy across a period using nuclear charge, shielding, and distance of electrons from nucleus

First and second ionization energy

VIDEO 7:35 minutes
Comparing first and second ionization energy of Li using nuclear charge, shielding, and distance of electrons from nucleus

Electron affinity

VIDEO 11:40 minutes
Definition of electron affinity, and comparing electron affinities of LI, Be, and B

Period trend for electron affinity

VIDEO 7:28 minutes
Explaining general trends in electron affinity across the second period, including the exceptions N and Ne

Electronegativity

VIDEO 9:54 minutes
Defines electronegativity and compares to electron affinity. Explains group and period trends in electronegativity using atomic radii.

Metallic nature

VIDEO 9:28 minutes
Properties of metals and how we can explain their properties using electron "sea" model.