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4E: A little more than a century ago, the chemist Dmitri Mendeleev published an early form of the periodic table, which organizes the known elements of our world by ionization energy and electron affinity. His method of classifying the elements was so useful that we still use it even today. We will learn to apply this elegant table to an understanding of atoms and molecules in this tutorial. Hydrogen, helium, lithium, beryllium, boron, carbon…
Electronegativity differences in bonding using Pauling scale. Using differences in electronegativity to classify bonds as covalent, polar covalent, or ionic.
Common terms describing the ways elements are classified in the periodic table.
The definition of a transition metal, and how to write the electron configuration including examples for Fe and Zn.
How to determine the number of valence electrons and draw Lewis structures for main group elements starting from the electron configuration.
Explaining group and period trends in atomic and ionic radii.
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