how to calculate hybridization of SiC and what is it's geometry
Answers
Formula for hybridisation: -->H=1/2 ( V + M - C + A ) V = Number of valence electrons. M = Monovalent atoms bonded to central atom. C = Cationic charge.
Where it can start to get slightly tricky is in dealing with line diagrams containing implicit (“hidden”) hydrogens and lone pairs. Chemists like time-saving shortcuts just as much as anybody else, and learning to quickly interpret line diagrams is as fundamental to organic chemistry as learning the alphabet is to written English.
Remember:
Just because lone pairs aren’t drawn in on oxygen, nitrogen, and fluorine doesn’t mean they’re not there.
Assume a full octet for C, N, O, and F with the following one exception: a positive charge on carbon indicates that there are only six electrons around it. [Nitrogen and oxygen bearing a formal charge of +1 still have full octets].
[Advanced: a quick note on determining the hybridization of atoms in some weird cases like free radicals, carbenes and nitrenes ]
2. How To Determine Hybridization Of An Atom: Two Exercises
Here’s an exercise. Try picking out the hybridization of the atoms in this highly poisonous molecule made by the frog in funky looking pyjamas, below right.
[Don’t worry if the molecule looks a little crazy: just focus on the individual atoms that the arrows point to (A, B, C, D, E). A and B especially. If you haven’t mastered line diagrams yet (and “hidden” hydrogens) maybe get some more practice and come back to this later.]
