chemical bonding and molecular structure

Chemical Bonding and Molecular Structure

The smallest particle of element is atom and the smallest particle in a compound is molecule. The force or the binding that keeps the atoms in the molecule combined during the formation of molecule is called chemical bonding. The concepts like that of Kossel-Lewis, VSEPR principle, valence bond theory, molecular orbital theory have been presented. In chemical bonding, it has more relation with orbitals around the nucleus and especially the valence orbitals.

Chemical bonds form if the resulting arrangement of the atoms has lower energy than the separated atoms i.e., atoms combine to attain a state of lower energy (potential) than that in the isolated ones, e.g. H2, P4, S8, H2O, C6H12O6 etc. Various changes in energy that occur when bonds form results from the movement of the valence electrons (the electrons in the outermost shell) of atoms.

Ionic bond

It involves the complete transfer of one or more electrons from one atom to another and is characterized by a large difference in electronegativity. An ionic bond is formed between an electropositive and an electronegative element.

Covalent bond

It involves the sharing of a pair of electrons between two atoms and is characterized by a small difference in electronegativity. A covalent bond is formed between two electronegative elements or could be generated between a less electropositive and an

electronegative element.

Metallic bond

It involves the free movement of valence electrons throughout the crystal and is also characterized by small difference in electronegativity. A metallic bond is formed between two electropositive elements

TSPSC  Notes brings Prelims and Mains programs for TSPSC  Prelims and TSPSC  Mains Exam preparation. Various Programs initiated by TSPSC  Notes are as follows:- For any doubt, Just leave us a Chat or Fill us a querry––

Hope we have satisfied your need for TSPSC Prelims and Mains Preparation

Kindly review us to serve even better

TSPSC Mains Test Series 2022

20 Quality mock tests and GS Mains Notes

Mains Test Series and Notes

Mains Printed Notes (With COD)

TSPSC Prelims Test Series 2022

24 Quality mock tests and GS Prelims Notes

Prelims Test Series and Notes

Prelims Printed Notes (With COD)

Subscribe to TSPSC Notes

Never Miss any TSPSC important update!

Join 2,512 other subscribers

error: Content is protected !!