Cat and the Hat

Name Period Date

Molecular Geometry – Ch. 9

For each of the following molecules, draw the Lewis Diagram and tally up the electron pairs. Then, identify the correct the molecular shape and bond angle. molecule lewis diagram e- tally shape bond angle
1. SeO3

2. AsH3

3. NO2 -

4. BeF2

molecule lewis diagram e- tally shape bond angle
5. SiH4

6. SeH2

7. PF5

8. SCl6

Name: _________________________________
Predicting Molecular Geometry and Hybridization

1. In each case, predict (a) the approximate bond angle(s), (b) the hybridization around the underlined atom. (Note: It is helpful to first sketch the Lewis stucture!)
Molecule or Ion
(1) OF2
(2) H2CO
(3) NO2+
(4) BF3
(5) SbF5
(a) No. of valence e - ‘s

(b) Lewis structure

(c) Approximate bond angle(s)

(d) Hybridization

(e) Polar or non-polar molecule?

Ion: Not applicable

(f) Geometry name

______________________________________________________________________________

2. For each of the molecules below fill in the indicated items in the chart. The central atoms are underlined.
Molecule
(1) SO2
(2) HBF2
(3) XeF4
(4) CH2Cl2
(5) NF3
(a) No. of valence e - ‘s

(b) Lewis structure

(c) Approximate bond angle(s)

(d) Hybridization

(e) Polar or non-polar molecule?

(f) Geometry name

____________________________________________________________________________

3. Predict (a) the approximate bond angle, (b) the hybridization around the indicated atoms (the atoms to which the arrows are drawn in the structures below). Write your answers near the corresponding labels (1 to 5) in the drawings. (Note: the lone pairs on the F atoms are omitted.)

1: 2: