Question

What is the hybridization of all the atoms (other than hydrogen) in each of the following species?
a) NH3 e) +NH4 i) H3O+
b) BH3 f) +CH3 j)H2C=O
c) -CH3 g) HCN
d)*CH3 h) C(CH3)4

There are a couple I don't know how to do. Please help? Did I do the other correctly?
Thanks.
a) tetrahedral/sp3 e) ? i) tetrahedral/sp3
b) tetrahedral/sp3 f) ? j) ?
c) tetrahedral/sp3 g) linear/sp
d) tetrahedral/sp3 h) ?

Any help is great appreciated.

Answer 1

a is right.
I believe b is sp2, trigonal planar. B has only 3 bonding electrons so can't be sp3.
I don't know what c,d,f mean
e is sp3
g is right
I believe all of these are sp3 bonds but you should confirm that.
i is sp3
j is sp2

Answer 2

Thank you Dr.Bob. For some reason my textbook doesn't have any answers to the selected problems so I don't know if I on the right track. I really appreciate your help.