Valence Electrons and the Periodic Table

This chemistry video tutorial provides a basic introduction into valence electrons and the periodic table. It explains how to determine the number of valence electrons and core electrons in an element by drawing the Bohr model of an atom, by writing the electron configuration of the element and by using the periodic table.

Protons & Neutrons - Free Formula Sheet:

Chemistry 1 Final Exam Review:

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Speed of Light, Frequency, Wavelength:

Photon Energy:

The Photoelectric Effect:

De Broglie Wavelength:

The Bohr Model of Hydrogen:

Heisenberg's Uncertainty Principle:

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Intro to Quantum Numbers:

Orbitals & Atomic Energy Levels:

Maximum Number of Electrons:

Intro to Electron Configuration:

Electron Configuration Exceptions:

Noble Gas Notation:

Electron Configuration of Ions:

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Orbital Diagrams:

Paired & Unpaired Electrons:

Aufbau's Principle & Hund's Rule:

Paramagnetic & Diamagnetic Elements:

Valence Electrons & Periodic Table:

Effective Nuclear Charge:

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Slater's Rule:

How To Identify the Element:

Quantum Numbers - Mega Review:

Quantum Numbers - Practice Test:

Final Exams and Video Playlists:

Full-Length Videos and Worksheets:

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Professor Organic Chemistry Tutor, thank you for an awesome Introduction to Valence Electrons and its ties to the classic Periodic Table. Valence Electrons and Core Electrons are simple to follow and understand from start to finish. There are multiple ways to determine the Valence and Core Electrons in Modern/AP Chemistry. This is an error free video/lecture on YouTube TV with the Organic Chemistry Tutor.

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