We're asked to write the electron configuration of Fluorine, F.
Recall that when an element is written w/o a net charge it refers to the ground state.
We can write the ground-state electron configuration of F by referring to the periodic table and locating the position of Ca in the periodic table.
Ground-state means that the element is in its lowest energy form (not in excited state). Ca has no charge which means that no electrons are removed or added in the atom.
Consider the following elements: N, Mg, O, F, Al.
Write an electron configuration for F.
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