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CHEMICAL BONDING R.SANGEETHA INTRODUCTION ATOMS COMBINE TO FORM COMPOUNDS SO AS TO ATTAIN STABLE NEAREST RARE GAS CONFIGURATION. MOST COMMON TYPES OF.

Published byMervin Morris Norton Modified over 9 years ago

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Presentation on theme: "CHEMICAL BONDING R.SANGEETHA INTRODUCTION ATOMS COMBINE TO FORM COMPOUNDS SO AS TO ATTAIN STABLE NEAREST RARE GAS CONFIGURATION. MOST COMMON TYPES OF."— Presentation transcript:

1

2 CHEMICAL BONDING R.SANGEETHA

3 INTRODUCTION ATOMS COMBINE TO FORM COMPOUNDS SO AS TO ATTAIN STABLE NEAREST RARE GAS CONFIGURATION. MOST COMMON TYPES OF BONDING ARE IONIC BONDING COVALENT BONDING DATIVE BONDING METALLIC BONDING

4 IONIC BONDING WHEN BONDING TAKES PLACE BY COMPLETE TRANSFER OF ONE OR MORE ELECTRONS FROM VALENCE SHELL OF ONE ATOM TO VALENCE SHELL OF ANOTHER ATOM. EXAMPLE:NaCl Na:Atomic no:11 Cl: Atomic no:17 ONE ELECTRON FROM Na IS TRANSFERRED TO Cl TO FORM IONIC BOND.

5 Na atom Cl atom FORMATION OF NaCl

6 COVALENT BONDING WHEN BONDING TAKES PLACE BY SHARING OF ELECTRONS FROM BOTH THE ATOMS TO FORM THE COMPOUND IT IS CALLED AS COVALENT BOND EXAMPLE:Cl 2

7 Cl atom FORMATION OF Cl 2

8 DIFFERENCE BETWEEN IONIC&COVALENT COMPOUNDS IONIC MOSTLY EXIST AS SOLIDS DUE TO STRONG ELECTROSTATIC FORCE OF ATTRACTION High melting and boiling point COVALENT THEY EXIST IN ALL THREE FORMS(ie) Solid,liquid&gases LOW MELTING AND BOILING POINT

9 DATIVE BONDING The shared pair of electrons are given by one of the combining two atoms. Example NH 3 BF 3

10 METALLIC BONDING METALS ARE HELD TOGETHER BY STRONG FORCE WHICH IS CALLED AS METALLIC BOND.

11 SUMMARY BONDING GENERALLY TAKES PLACE TO FORM STABLE COMPOUNDS

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