The correct answer is: [D]: "S" (sulfur). ___________________________________________________ Note: The other answer choices:
[A]: "K" (potassium) ; [B]: "Na" (sodium) ; [C] "Mg" (magnesium) ; ___________________________________________________ are all metals. ___________________________________________________ Answer choice: [D]: "S" (sulfur) ; is NOT a metal; and may exist in gaseous form. ___________________________________________________
