Question

part f
underline the valence electrons.
$1s^{2}2s^{2}2p^{1}$
$1s^{2}2s^{2}2p^{1}$
$1s^{2}2s^{2}2p^{1}$
$1s^{2}2s^{2}2p^{1}$

Explanation:

Valence electrons are the electrons in the outermost shell of an atom. In the electron - configuration \(1s^{2}2s^{2}2p^{1}\), the outermost shell is the second shell (\(n = 2\)). The electrons in the second shell are \(2s^{2}2p^{1}\).

Answer:

\(1s^{2}\underline{2s^{2}2p^{1}}\)