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Periodic table trends
Have you ever wondered why it is called the "periodic" table? The elements are organized based on their electronic structure, which results in some interesting trends in atomic properties as you move down a group or across a period. This tutorial will try to explain some of those trends!
How atomic radius is defined, and trends across a period and down a group.
Explaining group and period trends in atomic and ionic radii.
Correcting a mistake and learning a bit about ion size
Definition of ion and ionization energy, and trends in ionization energy across a period and down a group.
Explaining trend in ionization energy down a group using concepts of nuclear charge, electron shielding, and distance of electrons from nucleus
Explaining trends in ionization energy across a period using nuclear charge, shielding, and distance of electrons from nucleus
Comparing first and second ionization energy of Li using nuclear charge, shielding, and distance of electrons from nucleus
Definition of electron affinity, and comparing electron affinities of Li, Be, and B
Explaining general trends in electron affinity across the second period, including the exceptions N and Ne
Defines electronegativity and compares to electron affinity. Explains group and period trends in electronegativity using atomic radii.
Electronegativity differences in bonding using Pauling scale. Using differences in electronegativity to classify bonds as covalent, polar covalent, or ionic.
Properties of metals and how we can explain their properties using electron "sea" model.