Determine the point groups of the molecules in the following end-of-chapter problems fro...

Determine the point groups of the molecules in the following end-of-chapter problems from Chapter 3:

a. Problem 3.40

b. Problem 3.41

Reference of problem 3.40

For each of the following bonds, indicate which atom is more negative, then rank the series in order of polarity.

Reference of problem 3.41

Give Lewis dot structures and shapes for the following:

( P₄O₆ is a closed structure with overall tetrahedral arrangement of phosphorus atoms; an oxygen atom bridges each pair of phosphorus atoms.)