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https://www.khanacademy.org/science/chemistry/electronic-structure-of-atoms/electron-configurations-jay-sal/v/orbitals

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Shells, subshells, and orbitals (video) | Khan Academy

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The electrons in an atom are arranged in shells that surround the nucleus, with each successive shell being farther from the nucleus. Electron shells consist of one or more subshells, and subshells consist of one or more atomic orbitals. Electrons in the same subshell have the same energy, while electrons in different shells or subshells have different energies.

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6. Electronic configuration of ions Method

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6. Electronic configuration of ions Method

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Electron Configuration , & Orbital Diagrams

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The content of this video is designed to accompany the 12th edition of "Chemistry The Central Science" by Brown, Lemay, Bursten, Murphy, and Woodward. The title of the video corresponds to the section number and topic from the textbook. ©2011 Matthew W. Stoltzfus. All Rights Reserved.

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Quest 6. Electronic configuration of positive ions.

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Quest 6. Electronic configuration of positive ions.

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Hands rule

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Quest 5

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Quest 1

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 Quest 3.Principles to write an electronic configuration 

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 Quest 3.Principles to write an electronic configuration 

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Electronic Configuration of the Transition Elements

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Electronic Configuration of the Transition Elements

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*special case*

Cr-Has half-filled 3d orbitals

Cu-Has fully-filled 3d orbitals

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Drawing & Writing Electron Configurations

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Electron Configuration , & Orbital Diagrams

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This is a brief overview of how to find the electron configuration of an element. I made this for my sister Rebecca but I thought it could help others as well. Sorry for the bad quality and me not being able to speak. To get help with the d-block: http://www.youtube.com/watch?v=JvVBNKw1ZMA

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1

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aufbau principle :

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* The 4s and 3d orbitals overlap causing the 4s orbital to have a lower energy level compared to the 3d orbitals.