octet rule and ions

Exceptions to the Octet Rule - While the octet rule is very useful for describing bonding in a large number of compounds, there are many exceptions to this rule..

Where duplet is formed? A hydrogen atom has only one electron in its valence shell. It needs one more electron to fill its valence shell. The completed shell has the electronic arrangement of the noble gas helium, yet an octet is not completed. However we still get a stable m..

Atoms and Ions - Listed below are some elements that attain the octet configuration of Noble gases. Let us see how this happens. Study the given table: Elements Atomic number Electronic configuration Loss/gain of e Sodium 11 281 1 electron lost Oxygen S 16 2 electrons ained Magn..

(alkali) combine, the positively charged hydrogen ion of the acid combines with the negatively charged hydroxyl ion of the base to form a molecule of water. Hence, the water molecule formed does not have any charge because the positive and negative charges of the hydrogen i..

It is formed by the combination of the ammonia molecule and a hydrogen ion. In ammonia, the nitrogen atom has a lone pair of electrons after completing its octet. It donates this lone pair to the hydrogen ion. Thus the nitrogen atom becomes the donor. The hydrogen ato..

Radius Ratio Rules - For the stability of an ionic compound, each cation should be surrounded by maximum number of anions and vice versa. The number of oppositely charged ions surrounding each ion is called its co-ordination number. The larger is the size of the cation..

Aromaticity (Huckel rule) - Aromatic compounds are those, which resemble benzene in chemical behavior. These compounds contain alternate double and single bonds in a cyclic structure. They undergo substitution reactions rather than addition reactions. This characteristic behavior is calle..

>The outermost shell of an atom cannot accommodate more than 8 electrons, even if it has a capacity to accommodate more electrons. This is a very important rule and is also called the Octet rule. The presence of 8 electrons in the outermost shell makes the atom very st..

Order of naming ions The cation is named first (whether simple or complex) then the anio..

The process of conversion of a neutral atom into charged ions to complete its octet is known as ionizatio..