Follow the steps below to write short cut version of electron configurations. Step 1 : Find the element on the periodic table. Step 2: Go back to the last noble gas. Writing out an electron configuration for an element is a great way to look at the distribution of electrons in an atom. Because of this, scientists have developed a shorthand notation that involves using a noble gas to represent electrons that are not valence electrons. Jun 14, A noble gas configuration of an atom consists of the elemental symbol of the last noble gas prior to that atom, followed by the configuration of.