Question

43) The electron configuration of the sulfide ion (S2-) is A) [Ne]352 B) [Ne]3s23pl C) [Ne]3s23p4 D) [Ne]3p2 E) [Ne]3s23p6

Answer 1

Number of electron in S = 16
Since charge on S is -2
So, we need to add 2 electrons more
Number of electrons to be arranged = 18
Electronic configuration is 1s2 2s2 2p6 3s2 3p6

Noble gas having lesser electron than S and closest to it is Neon (Ne)
Number of electron in Ne = 10
electronic configuration of Ne is: 1s2 2s2 2p6 3s2 3p6

So, electronic configuration of S in noble gas form is: [Ne] 3s2 3p6
Answer: E