Electron Configuration Exceptions - Chromium (Cr) & Copper (Cu)

This chemistry video tutorial covers exceptions in electron configuration using the examples of Chromium and Copper.

Electron Configuration of Ions:

Noble Gas Notation:

How To Identify The Element:

Intro to Quantum Numbers:

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Orbitals & Atomic Energy Levels:

Maximum Number of Electrons:

Paramagnetic & Diamagnetic Elements:

Aufbau's Principle & Hund's Rule:

Valence Electrons & Periodic Table:

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Effective Nuclear Charge:

Quantum Numbers - Mega Review:

Quantum Numbers - Practice Test:

Lewis Structures Super Review:

Hybridization of Atomic Orbitals:

Molecular Orbital Theory:

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[fiction]

is the exception same (unpaired tendency) in CU too? cuz the d subshell is fully filled and they are paired now? why did one electron go from 4s2 to 3d9?

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[thomaswaterworth]

Why does the electron jump in Copper? There isn't technically any "open space" there like it is in Chromium...