Question

question 5 (2 points)
consider the carbonate ion, co₃⁻².
the lewis structure has 1 central atoms.
the central atom has 2 single bonds and one double bond.
the number of reds at the central atom is 2.
the bond angles are 3° and the shape is 4.
co₃⁻² is a 5 symmetrical/asymmetrical molecule.
a. 0 b. 1 c. 2 d. 3 e. 4 f. 180 g. 90 h. 120
i. 109.5 j. diatomic k. linear l. planar trigonal m. bent n. pyramidal o. tetrahedral p. symmetrical q. asymmetrical

Explanation:

1. Central atoms

Carbonate ion (\(CO_{3}^{-2}\)) has one central atom (carbon).

2. REDs (Region of Electron Density)

The central carbon atom has 3 regions of electron density (2 single bonds and 1 double bond).

3. Bond angles

For 3 regions of electron density with no lone pairs on the central atom, the bond angle is \(120^{\circ}\).

4. Shape

With 3 regions of electron density and no lone pairs on the central atom, the shape is planar trigonal.

5. Symmetry

\(CO_{3}^{-2}\) is symmetrical as it has a regular planar trigonal geometry.

Answer:

1. B. 1
2. D. 3
3. H. 120
4. L. planar trigonal
5. P. symmetrical