what is the electron configuration of potassium?
K = #1s^2 2s^2 2p^6 3s^2 3p^6 4s^1#. This simplifies to a noble gas notation of:K = #[Ar] 4s^1#. Potassium (K) is an Alkali metal found in the first column (Group I) and in the fourth row (period 4) of the periodic table. All alkali metals end in #s^1# for their electron configuration. The total electron configuration for potassium is. K = #1s^2 2s^2 2p^6 3s^2 3p^6 4s^1#. This simplifies to a noble gas notation of. K = #[Ar] 4s^1#. We use the symbol for argon (Ar) because it is the last noble gas in the period (row) above potassium on the periodic table.