Question

what type of hybridization can lead to a pyramidal (distorted tetrahedral) molecule such as :nh₃?
a. sp3d
b. sp3
c. sp2
d. sp3d2

question 4
1 pts
a sigma bond has ____ area(s) of overlap
a. two
b. one
c. three
d. four

question 5

Explanation:

For the first question, in ammonia ($NH_3$), the nitrogen atom has 4 electron - groups (3 bonding pairs and 1 lone pair). According to valence - bond theory and hybridization concepts, this leads to $sp^3$ hybridization resulting in a pyramidal shape. For the second question, a sigma bond is formed by the head - on overlap of atomic orbitals and has one area of overlap.

Answer:

Question 3: b. sp3
Question 4: b. one