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# What is the valence electron configuration for 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 . All alkali metals end in ##s^1## for their .

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.

The are the highest energy level s and p orbital electrons of the atom. This would mean potassium has a valence shell of ##4s^1##

I hope this was helpful. SMARTERTEACHER