Which bond is strongest and why?
a. c=c
c=n
c=o
c=s

For this you should look at each elements' electronegativity. The closer the difference is to zero is the most covalent and strongest. Even without looking at their individual electronegativities, I know that the Carbon-Carbon bond will be the strongest. They have the same electronegativity so when you subtract them you get 0. So, your answer is A, the double bonded C2

There is one s orbital, and there are three p orbitals, five d orbitals, and seven f orbitals. thus, the answer is b. do not confuse the number of orbitals in a subshell with the number of electrons the subshell can hold. each orbital can hold two electrons, so the capacity of an nf subshell is 14 electrons.