Question

question 3 (2 points)
tetrahedral molecules like ccl₄ with 1 reds are 2 symmetrical/asymmetrical and 3 nonpolar/polar
tetrahedral molecules like ccl₃h with 4 reds are 5 symmetrical/asymmetrical and 6 nonpolar/polar
a. symmetrical b. asymmetrical c. nonpolar d. polar
e. 0 f. 1 g. 2 h. 3 i. 4

Explanation:

• For \(CCl_4\):
• It has 4 regions of electron - density (REDS) (all are \(C - Cl\) bonds).
• The molecule is symmetrical (tetrahedral symmetry with all 4 bonds the same).
• Since it is symmetrical, the bond dipoles cancel out, making it non - polar.
• For \(CHCl_3\):
• It has 4 regions of electron - density (3 \(C - Cl\) bonds and 1 \(C - H\) bond).
• The molecule is asymmetrical (because of the different \(C - H\) and \(C - Cl\) bonds).
• The bond dipoles do not cancel out (due to asymmetry), making it polar.

Answer:

1. I. 4
2. A. symmetrical
3. C. nonpolar
4. I. 4
5. B. asymmetrical
6. D. polar