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Section 2. Parts 2. Part 2. The list below quotes the ground state electron configurations i. The order of filling the electron levels is listed below and also indicated on the diagram below.
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Electron Configuration

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Electronic Configurations Intro

The orbital letters are associated with the angular momentum quantum number, which is assigned an integer value from 0 to 3. The s correlates to 0, p to 1, d to 2, and f to 3. The angular momentum quantum number can be used to give the shapes of the electronic orbitals. The orbital names s , p , d , and f stand for names given to groups of lines originally noted in the spectra of the alkali metals. These line groups are called sharp , principal , diffuse , and fundamental. The s orbitals are spherical, while p orbitals are polar and oriented in particular directions x, y, and z.

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Orbitals: Crash Course Chemistry #25

The electron configuration of an atom is the representation of the arrangement of electrons distributed among the orbital shells and subshells. Commonly, the electron configuration is used to describe the orbitals of an atom in its ground state, but it can also be used to represent an atom that has ionized into a cation or anion by compensating with the loss of or gain of electrons in their subsequent orbitals. Many of the physical and chemical properties of elements can be correlated to their unique electron configurations. The valence electrons, electrons in the outermost shell, are the determining factor for the unique chemistry of the element. Before assigning the electrons of an atom into orbitals, one must become familiar with the basic concepts of electron configurations. Every element on the Periodic Table consists of atoms, which are composed of protons, neutrons, and electrons.

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