structure of atom

A study of crystal structure of silica reveals that it forms a giant molecule as shown belo..

The negatively charged carbon atom in carbanion is sp 3 hybridized. Therefore, it has a tetrahedral structure. Three of the four sp 3 hybridized orbitals form 3 s -bonds with hydrogen or carbon atom of the alkyl group. The fourth sp 3 hybrid orbital contains the lo..

In diamond, the carbon atoms are arranged tetrahedrally (sp 3 hybridisation of C): each C atom is linked to its neighbors by four single covalent bonds. This leads to a three-dimensional network of covalent bonds...

The carboxyl group and amino group are attached to the same carbon atom, hence amino acids are termed as -amino acids...

In alkynes, the two carbon atoms in the parent chain are bonded through a triple bond. The formation of triple bond in alkynes is illustrated below by taking ethyne (acetylene) as a typical exampl..

Structurally all types of chlorophyll resemble one another. All of them contain four pyrrole rings [also called porphyrin] which are linked together by methane bridges (-CH=). The skeleton of each pyrrole ring is made up of five atoms - four carbon and one nitrogen with magnesiu..

The electronic configuration of atom 'D' has seven electrons in the outermost shell. Each 'D' atom should share a pair of electrons with another 'D' atoms to form a substance containing only 'D' .i.e., Hence, the formula of the substance is D 2 . It is a covalen..

The steps in writing Lewis structures of covalent compounds are as follows: of the molecule by placing the atoms of the combining elements properly. Usually an atom, which forms the largest number of bonds with other atoms is written as the central atomh..

Structure of the Carboxyl Group - Electron and neutron diffraction studies show that carboxyl group has a planar structure. Thus the carboxylic carbon and the two oxygen atoms in carboxylic group are sp 2 hybridized. The carboxylic carbon forms are (sp 2 - sp 2 ) s - b..

After taking into account account the above observed facts, Kekule (1865) suggested a ring structure for benzene. According to him, six carbon atoms occupied six corners of a regular hexagon in benzene and each carbon carried one hydrogen atom. To satisfy the tetraval..