Question

The configuration 1s² , 2s² 2p⁵ , 3s¹ shows :
(a) excited state of $O_2^-$
(b) excited state of neon atom
(c) excited state of fluorine atom
(d) ground state of fluorine atom

Answer 1

b.. exited state of neon atom

Answer 2

you should check your question correctly

because electron should remove from outermost shell / valence shell(3s) not from other than that

like in this question electron is removing from (2p5)