WELCOME

SREE NARAYANA TRAINING COLLEGE SREEKANDESWARAM POOCHACKAL

B.Ed 2014-15KERALA UNIVERSITY

Submitted By, MINVYA.M

PHYSICAL SCIENCE REG NO: 18214383013

Submitted To, MRS.LINI MOL.K.S Faculty in Physical science department SNTC Poochakkal

IONIC BONDING

CHEMICAL BONDING

A chemical bond is an attraction between atoms that allows the formation chemical substances that contain two or more atoms . The bond is caused by the electrostatic force of attraction between opposite charges, either between electrons and nuclei, or as the result of a dipole attraction.

A chemical bond forms when the potential energy of the bonded atoms is less than the potential energy of the separate atoms

Have to consider following interactions: nucleus-to-nucleus repulsion electron-to-electron repulsion nucleus-to-electron attraction

Tro, Chemistry: A Molecular Approach

IONIC BONDS

When metals bond to nonmetals, some electrons from the metal atoms are transferred to the nonmetal atoms

–Metals have low ionization energy, relatively easy to remove an electron from–Nonmetals have high electron affinities, relatively

good to add electrons to

Electron from Na is transferred to Cl, this causes a charge imbalance in each atom. The Na becomes (Na+) and the Cl becomes (Cl-), charged particles or ions.