single double and triple covalent bonds

In these dienes the double bonds are separated by more than one single bond and are called isolated dienes. For example:..

Alkynes are isomeric with alkadienes both being represented by the general formula C n H 2 n - 2 . So there can be a difference in the nature of the bond (triple to double) giving different functional properties. For example,..

Carbon atom has four electrons in its outermost shell and hydrogen atoms have only one electron in its outermost shell. Carbon share one of its electrons with hydrogen to form a single bond each. Each carbon then requires three more electrons to acquire a stable configuration ..

. This occurs when the sigma ( s ) electrons of the H-C bond that is attached to an unsaturated system, such as double bond or a benzene ring, enter into conjugation with the unsaturated system. The concept of hyperconjugation was developed by Baker and Nathan and is a..

. The reluctance of silicon to form p p -p p bonds to itself is clearly shown by the following facts: that (i) elemental silicon exists only in tile diamond structure and no form of elemental silicon is comparable to graphite and (ii) while CO 2 is a gas with two carbon oxygen double..

As the RNA chain grows, the transcribed region of the DNA molecule gets hydrogen bonded to the opposite strand and the two become spirally coiled to assume the original double helical form. When the last ribonucleotide is added, the RNA polymerase and RNA chain are completely r..

The electronic configurations of carbon and oxygen are: Thus, each carbon atom requires four, and each oxygen atom requires two more electrons to acquire noble gas configurations. To achieve this, two oxygen atoms form a double covalent bond with carbon as follows. ..

If two or more structures can be assigned to a molecule, none of which is capable of describing all the known properties of the compound, then the actual structure is known to be a resonance hybrid or an intermediate of these structures. The various structures written are called resonating structur..

Hydrogen atom has only one electron in its outermost shell, and requires one more electron to acquire the nearest noble gas configuration of helium (He:1s 2 ). To do so, two hydrogen atoms contribute one electron each to share one pair of electrons between them. This leads to the formation of a h..

It is the most widely used technique in genetic engineering. It involves the formation of recombinant DNA and its introduction into an appropriate host. Recombinant DNA is the DNA formed by combining DNAs from different organisms. The technique requires skilful handling of genetic material an..