Question

How many double bonds are required so that the whole molecule lies is one plane (flat geometry ) ? Is it ODD number of double bonds or EVEN ? Give reason . Please explain properly or else you shall be REPORTED

Answer 1

Explanation:

A double bond in chemistry is a covalent bond between two atoms involving four bonding electrons as opposed to two in a single bond. Double bonds occur most commonly between two carbon atoms, for example in alkenes. Many double bonds exist between two different elements: for example, in a carbonyl group between a carbon atom and an oxygen atom. Other common double bonds are found in azo compounds (N=N), imines (C=N) and sulfoxides (S=O). In a skeletal formula, a double bond is drawn as two parallel lines (=) between the two connected atoms; typographically, the equals sign is used for this.[1][2] Double bonds were first introduced in chemical notation by Russian chemist Alexander Butlerov.[citation needed]

Double bonds involving carbon are stronger than single bonds and are also shorter. The bond order is two. Double bonds are also electron-rich, which makes them potentially more reactive in the presence of a strong electron acceptor (as in addition reactions of the halogens).

Chemical compounds with double bonds

Ethene structural.svg

Leuckart-Wallach-Reaktion Aceton.svg

Dimethylsulfoxid.svg

Trans-diazene-2D.png

Ethylene

Carbon-carbon

double bond

Acetone

Carbon-oxygen

double bond

Dimethyl sulfoxide

Sulfur-oxygen

double bond

Diazene

Nitrogen-nitrogen

double bond