Question

How does hyper conjugation effect explain the stability of alkenes?

Answer 1

• The relative stability of various classes of carhonium ions may be explained by the number of no bond resonance structures that can be written for them. 
• Such structures are arrived by shifting the bonding electrons from an adjacent C-H bond to the electron deficient carbon. 
• in this way, the positive charge originally on carbon is dispersed to the hydrogen. This manner of electron release by assuming no bond character in the adjacent C-H bond is called hyper conjugation or Baker- Nathan effect. 
• The greater the hyper conjugation, the greater will be the stability of the compound. 

The increasing order of stability can be shown as:

• Alkyl group increases in the C=C double bond carbon, hyper conjugation increases and stability of that organic compound also increases.