Why ethene has no hyperconjugation structure please explain.................

HELLO THERE!

 

First, let me tell you comething!

 

Alpha carbon: The carbon adjacent to the carbon directly attached with another carbon with a double bond is called as Alpha carbon.

 

Alpha hydrogen: The hydrogens attached to an alpha carbon is called as Alpha hydrogen.

 

Now, to show hyperconjugation, Alpha hydrogen must be present (hyperconjugation is also known as no-bond resonance). However, Ethene is the simplest Alkene, having only two carbons directly attached with a double bond. There is no adjacent carbon (alpha carbon) attached to these carbons and hence, no alpha hydrogen.

 

Thus, ethene doesn’t show hyperconjugation.

 

THANKS!

My question is 

Formula for number of hyper conjugating structure is alpha hydrogen +1,

Then,why ethene has no hyper conjugating structure ??

If we go according to formula, the ans is 1

But it is zero 

Why ????