Chemistry 221 L2 Video Lecture from October 30, 2025, Part 3 of 3.

This video covers material from Chapter 5 including magnetism in molecular orbital (MO) theory, short hand notation in MO theory, determining the number of sigma and pi bonds in MO theory and more.

CH 221 website: https://mhchem.org/221

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Chemistry 221 L2 Video Lecture from October 30, 2025, Part 2 of 3.

This video covers material from Chapter 5 including an introduction to molecular orbital theory, bonding and antibonding orbitals, the four principles of MO theory, bond order in MO Theory and in Lewis Structures, and more.

CH 221 website: https://mhchem.org/221

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Chemistry 221 L2 Video Lecture from October 30, 2025, Part 1 of 3.

This video covers material from Chapter 5 including an introduction to valence bond theory, orbital hybridization, sigma and pi bonds, the nature of a pi bond, hindered rotation around double bonds (relative to sigma bonds), and more.

CH 221 website: https://mhchem.org/221

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Chemistry 221 L1 Video Lecture from October 29, 2025.

This video covers material from Chapter 5 including valence bond theory (sp3 hybridization), the origin of double and triple bonds (pi bonds), molecular orbital theory, and more.

CH 221 website: https://mhchem.org/221

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Chemistry 221 L1 Video Lecture from October 27, 2025.

This video covers material from Chapter 4 and Chapter 5 including molecular polarity, VSEPR, Valence Bond Theory (VB) and more.

CH 221 website: https://mhchem.org/221

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Chemistry 221 L1 Video Lecture from October 24, 2025.

This video covers material from Chapter 4 including violations of the octet rule, paramagnetic compounds, formal charges, VSEPR, and more.

CH 221 website: https://mhchem.org/221

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Chemistry 221 L2 Video Lecture from October 23, 2025, Part 3 of 3.

This video covers material from Chapter 4 including VSEPR with trigonal bipyramid and octahedral structures, molecular polarity, how to determine if a molecule is polar or nonpolar and more.

CH 221 website: https://mhchem.org/221

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Chemistry 221 L2 Video Lecture from October 23, 2025, Part 2 of 3.

This video covers material from Chapter 4 including multiple (double and triple) bonds, exceptions to the octet rule, paramagnetic molecules, VSEPR and more.

CH 221 website: https://mhchem.org/221

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Chemistry 221 L2 Video Lecture from October 23, 2025, Part 1 of 3.

This video covers material from Chapter 4 including ionic and covalent bonding, Coulomb's Law, the Lewis structure, electronegativity, valence and core electrons, bonding and lone pairs, and more.

CH 221 website: https://mhchem.org/221

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Chemistry 221 L1 Video Lecture from October 22, 2025.

This video covers material from Chapter 4 including polar versus nonpolar bonds, electronegativity, valence electrons, the Lewis structure, building a Lewis structure, and more.

CH 221 website: https://mhchem.org/221

Let me know if you have any questions! Peace!