Question

write the subshell electronic configuration of potassium

Answer 1

$1s { }^{2} 2s { }^{2} 2p {}^{6} 3s {}^{2} 3p {}^{6}4s { }^{1}$

Answer 2

Shell wise subshell electronic

configuaration =  1s^2 2s^2 2p^6 3s^2 3p^6 4s^1