[23y" Which one of the following elements has the highest ionisation energy? "],[[" (a) "[" Ne "]3s^(3)3p'|3," (b) "[v_(e)]3s^(2)3p^(2)+5," (c) "[Ne]3s^(2)3p^(2)/4," (d) "[Ar]3d^(10)4s^(2)4p^(2)]]