Wemer's theory

Valence bond theory

Crystal field theory

Molecular orbital theory

-296, -325, -333 and -349

349, -333, -325 and -296

-333, -349, -325 and -296

-333, -325, -349 and -296

Matter consists of indivisible atoms all the atoms of a given element have.

Chemical reactions involve reorganization of atoms. These are neither created not destroyed in a chemical reaction.

When gases combine or reproduced in a chemical reactionn they do so in a simple ratio by volume provided all gases are the same T & P.

Identical properties including identical mass. Atoms of differemt element differ in mass.