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A quantum number beginning in 3, 0, describes an electron in the s orbital of the thirdelectronshellof an atom.
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This example is from Wikipedia and may be reused under a CC BY-SA license.For molecules with a closedelectronshellin the ground state, this transformation of the orbitals leaves the total many-electron wave function unchanged.
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This example is from Wikipedia and may be reused under a CC BY-SA license.In both the actinide and lanthanide series, an innerelectronshellis being filled.
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This example is from Wikipedia and may be reused under a CC BY-SA license.Nickel-62 has the highest binding energy per nucleon of any isotope for any element, when including theelectronshellin the calculation.
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This example is from Wikipedia and may be reused under a CC BY-SA license.They are therefore 3 electrons short of filling their outermostelectronshellin their non-ionized state.
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This example is from Wikipedia and may be reused under a CC BY-SA license.A chlorine atom has seven electrons in its outerelectronshell, the first and second shells being filled with two and eight electrons respectively.
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This example is from Wikipedia and may be reused under a CC BY-SA license.This transition is accompanied by a 12% volume decrease and delocalization of the electrons at the 5felectronshell.
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This example is from Wikipedia and may be reused under a CC BY-SA license.Lone pairs are found in the outermostelectronshellof atoms.
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This example is from Wikipedia and may be reused under a CC BY-SA license.Large jumps in the successive molar ionization energies occur when removing an electron from a noble gas (completeelectronshell) configuration.
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This example is from Wikipedia and may be reused under a CC BY-SA license.Like the noble gases the tendency for non-reactivity is due to the valence, the outermostelectronshell, being complete in all the inert gases.
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This example is from Wikipedia and may be reused under a CC BY-SA license.Some properties of europium are strongly influenced by its half-filledelectronshell.
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This example is from Wikipedia and may be reused under a CC BY-SA license.The outermostelectronshellis often referred to as the valence shell and (to a first approximation) determines the chemical properties.
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This example is from Wikipedia and may be reused under a CC BY-SA license.A new row ("period") is started when a newelectronshellhas its first electron.
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This example is from Wikipedia and may be reused under a CC BY-SA license.Consequently, as anelectronshellstarts to become filled up, the electrons become organised in pairs.
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This example is from Wikipedia and may be reused under a CC BY-SA license.These were identified as, respectively, theelectronshellnumber, the orbital number, and the orbital angular momentum number.
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This example is from Wikipedia and may be reused under a CC BY-SA license.Lewis proposed that an atom forms enough covalent bonds to form a full (or closed) outerelectronshell.
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This example is from Wikipedia and may be reused under a CC BY-SA license.A sodium atom has a single electron in its outermostelectronshell, the first and second shells again being full with two and eight electrons respectively.
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This example is from Wikipedia and may be reused under a CC BY-SA license.Ionization occurs when an electron is stripped (or knocked out) from anelectronshellof the atom, which leaves the atom with a net positive charge.
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This example is from Wikipedia and may be reused under a CC BY-SA license.All but one of the actinides are f-block elements, corresponding to the filling of the 5felectronshell; lawrencium, a d-block element, is also generally considered an actinide.
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This example is from Wikipedia and may be reused under a CC BY-SA license.These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.