The document discusses electrons in solids and the fundamentals of bonding in solids. It notes that in solids, electrons interact with one another at high densities of 1028 per cubic meter. Atoms maintain their individual energy levels even when bonded together in solids and molecules. Bonding in solids involves interatomic binding forces called chemical bonds that hold atoms, ions, and molecules at different spacing levels, including primary and secondary bonds that are classified into four categories.

1. ELECTRICAL ENGINEERING
MATERIALS
MR. ASIF L. JAMADAR

2. ELECTRONS IN SOLIDS
 In solid, the electrons number 1028 per m3
and interact with one another.
 The atoms are independent and have
electron energy levels appropriate to the
single atoms.
 For example: hypothetical eight atom
molecule
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 When the number of atoms (N) are very
large as in solids…….
 Joining of atoms to form the molecules
does not alter with quantum number

4. FUNDAMENTALS OF BONDING IN SOLIDS
 Interatomic binding forces between atoms are called as chemical bonds.
 Process of holding the atoms, ions & molecules at different spacing levels are
called as bonding
 Primary bonds & secondary bonds
 Bondings are classified into four classes.
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5. THANK
YOU
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