chem hw help!?
6. Which of the following is NOT isoelectronic with sulfide, S2-?
a) Ca2+
b) Ar
c) Cl−
d) O2-
6. Which of the following is NOT isoelectronic with sulfide, S2-?
a) Ca2+
b) Ar
c) Cl−
d) O2-
az_lender
The O2- is isoelectronic with Neon, not with Argon. Look at the periodic table, it will be obvious!