Current Attempt in Progress

What energy $($in eV $)$ is required to remove the remaining electron from a singly ionized helium atom, $)=(2?$

$3\mathrm{.}40$ eV

$13\mathrm{.}6$ eV

$27\mathrm{.}2$ eV

$54\mathrm{.}4$ eV

$76\mathrm{.}9$ eV