polar or nonpolar? molecular geometry? lewis dot structures?

Question

for each compound please say if it is polar or not, what the molecular geometry is and explain the lewis dot for each please : NH2Cl, Cl2O, AsH5, AlH3, CCl2F2, O3

Answer 1

1, NH2CL. This is a tetrahedral with N in the middle, 2H and 1 Cl on three corners and an unshared pair of electrons on the fourth. At each corner, N has a non-polar bond with each element. N contributes one electron and the element contributes the other.

2. Cl2O. This is a tetrahedral with O in the middle, 2 Cl on two corners and one pair of unshared electrons on each of the other two corners. Where O and Cl bond, each donate an electron.

3. AsH5 This is a d2sp3 bond, which I guess is some structure where As is in the middle and has 5 bonds, each with one H. As and H each donate an electron to a bond.

4. AsH3. Arsenic appears As+5 or As+3 valance. Here, it is in the middle of a tetrahedral structure where 3 corners have H bonded to the As with non-polar bonds.

5. CCl2F2. C is at the middle of a tetrahedral structure where the at two of the four corners, there is a Cl, and at the other two, a F. The Cl or F each donate one electron to bond with one electron of the carbon. This is non-polar.

6. Ozone is a bit tricky. It looks like an equilateral triangle with an O at each corner. Each O shares an electron with each other O to form the bonds.

Answer 2

:D