# What is the number of electrons on the outer shell of nickel?

$2$
Electronic configuration of Nickel ($\text{_28"Ni}$) is
${\text{1s"^2\ "2s"^2\ "2p"^6\ "3s"^2\ "3p"^6\ "4s"^2\ "3d}}^{8}$
Outermost shell (${4}^{\text{th}}$ shell) contains $2$ electrons