Please help me with sigma bonds. I don't get how to do this at all. The question is attached. I need it explained also, please!

Question

anonymous · Answer

attachment

aaronq · Answer

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aaronq · Answer

On carbon: 
4 bonds = $sp^3$, no free p orbitals
3 bonds = $sp^2$, 1 free p orbital
2 bonds = $sp$, 2 free p orbitals

aaronq · Answer

free = unhybridized

anonymous · Answer

i don't understand the concept of this at all

anonymous · Answer

how exactly do you come up with the answer? what should you know to get the answer?

chmvijay · Answer

for this u should no about the hybridization and the when sigma and pie bonds are formed :) and why they are formed :)
this all u can understand by stdying the hybridization of atomic orbitals :)

aaronq · Answer

watch these vids (there are 9) he explains well http://www.youtube.com/watch?v=vKd7q6cdiPo&list=PL97DA688081EF9C45

anonymous · Answer

Thank you aaron!