Which Statement About the Thiocyanate Ion, SCN^-, Is True?
A) $\sigma$

Which statement about the thiocyanate ion, SCN^-, is true?

A) Only one correct resonance structure can be drawn.
B) Its Lewis structure contains an unpaired electron.
C) Its shape is bent like that of H₂O.
D) There are more than two $\sigma$ bonds in the ion.
E) none of these