The noble gas construction is a shorthand electron configuration for atoms.

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In chemistry, the noble gas configuration is a shorthand method of composing an atom’s electron configuration. The factor for using the noble gas construction is since the full electron construction becomes really long because that atoms through high atomic numbers.

Here is a look at at how to compose a noble gas configuration and a list of the electron construction for every 118 elements.

How to compose a Noble Gas Configuration

The noble gas configuration offers the noble gas core that occurs prior to the facet on the regular table and also then the electron configuration of the atom’s valence electrons. But, you must understand just how to write the complete electron configuration to discover the variety of valence electrons.

Here space the measures for writing a noble gas configuration:


Applying the Aufbau principle renders writing electron configurations lot simpler.
Find the variety of electrons because that the atom. Because that a neutral atom, this is the exact same as the atomic number. (For one ion, the number of electrons is not the very same as the number of protons, but otherwise the same procedures apply.)Fill in the electron shells and also energy levels v the electrons.Each s covering holds approximately 2 electrons.Each p shell holds as much as 6 electrons.Each d shell holds up to 10 electrons.Each f covering holds up to 14 electrons.

Noble Gas configuration Examples

For example, create the noble gas construction of sodium.

The atomic number of sodium is 11, so you know the neutral atom has 11 protons and also 11 electrons.Filling in the electron shells making use of the Aufbau principle provides a construction of 1s2 2s2 sp6 3s1. Add up the superscripts and also double-check to make certain you have the correct variety of electrons.Write the noble gas configuration. Looking in ~ a regular table, keep in mind the noble gas prior to sodium is neon. The electron construction of neon is 1s2 2s2 2p6. So, the noble gas main point symbol replaces that section of the sodium electron configuration. The noble gas configuration for salt is 3s1.

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For example, compose the noble gas construction of neon.

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