The question is how many hyperconjugating strutures are there for the following compound. I know this is very elementary question . I thought the answer was 8 but it turns out to be 0. Does it invoke the very definition of hyperconjugation?

Question: given two vectors $i-j$ and $i+2j$ , the unit vector coplanar with the two vectors and perpendicular to first is (a)$\dfrac{1}{\sqrt 2} (i+j)$ (b)$\pm\dfrac{1}{\sqrt 2} (i +j)$ Let given two vectors be a and b, required vector be $r=xi+yj+zk$ then $[a b c]=0$ solving I got z=...

Since you are familiar with how carbocations are stabilized via hyperconjugation I will keep this brief: With alkenes, it really is the same principle at work. Instead of the empty p orbital, you have to consider the empty $\pi^{*}$ orbitals of the $\ce{C=C}$ double bond. They interact with the f...

Why does $\ce{F}$ replace an axial bond in $\ce{PCl5}$? I realize that it would be more stable there than at equatorial bond, but what is the reason of its stability? Similarly in $\ce{AB4}$ type of molecules with $\ce{sp^3d}$ hybridization (4 bond pairs and 1 lone pair) why is the geometry of th...