Why is the following Lewis structure unlikely to contribute much to the bonding in NCO? Choose all the answers that apply.
a. Carbon has a positive formal charge.
b. Carbon is not a good central atom.
c. Oxygen should have the negative charge.
d. Carbon has a + 1 formal charge and O has a -1 formal charge.
e. Nitrogen has a - 2 formal charge and oxygen has a + 2 formal charge.