Question

Match the molecular shapes to the correct Lewis structures.

Answer 1

Answer :

(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.