Question

Match the molecular shapes to the correct Lewis structures.

(options provided in the image below)

Answer 1

1. trigonal planar

2. tetrahedral

3. trigonal pyramidal

4. bent

Step-by-step explanation:

Answer 2

(a)
`AlH_3`

In this Lewis dot structure, there are 3 bond pair and 0 lone pair on the central atom. The total number of electron pair is 3. So, the hybridization of the molecule will be,
`sp^2` and the geometry will be, trigonal planar.

(b)
`CH_2F_2`

In this Lewis dot structure, there are 4 bond pair and 0 lone pair on the central atom. The total number of electron pair is 4. So, the hybridization of the molecule will be,
`sp^3` and the geometry will be, tetrahedral.

(c)
`PH_3`

In this Lewis dot structure, there are 3 bond pair and 1 lone pair on the central atom. The total number of electron pair is 4. So, the hybridization of the molecule will be,
`sp^3` but the the fourth position will be occupied by one lone pair. Hence, the geometry will be, trigonal pyramidal not tetrahedral.

(d)
`O_3`

In this Lewis dot structure, there are 2 bond pair and 1 lone pair on the central atom. The total number of electron pair is 3. So, the hybridization of the molecule will be,
`sp^2` but the the third position will be occupied by one lone pair. Hence, the geometry will be, bent not linear.

The image is also shown below.