the bond angle in co₃²⁻ is expected to be approximately\n90 degrees\n109.5 degrees\n120 degrees\n145…

the bond angle in co₃²⁻ is expected to be approximately\n90 degrees\n109.5 degrees\n120 degrees\n145 degrees\n180 degrees

the bond angle in co₃²⁻ is expected to be approximately\n90 degrees\n109.5 degrees\n120 degrees\n145 degrees\n180 degrees

Answer

Brief Explanations:

For $\text{CO}_3^{2-}$, the central C atom has 3 bonding pairs (to O atoms) and no lone pairs, giving a trigonal planar electron geometry. Trigonal planar structures have bond angles of approximately 120 degrees.

Answer:

120 degrees