Simple types

2. Directorate of Staff Development Punjab, Lahore
Induction Level training of SSE(Bio-Chem)
at
Govt. High School Lodhran

3. Contents
 Definition of chemical bonding
 Types of chemical bonding
 Ionic bond
 Covalent bond
 Coordinate covalent bond
 Metallic bond

4. What is Chemical Bond?
A force that holds two or more atoms of same or
different elements together called chemical bond.

5.  Ionic bond
 Covalent bond
 Coordinate covalent bond
 Metallic bond
Types of chemical bonds

7. Ionic Bond
A bond formed by the transfer of valence electron of
metal atom to the outer most shell of non metals atom
Key:
Metal + Nonmetal

11. Properties of Ionic Compounds

17. Covalent Bond
A bond formed by the mutual sharing of valence electron
between the atoms.
Key:
Nonmetal + Nonmetal

18. Non-polar covalent bond
A bond formed by the mutual sharing of electrons between
atoms of same element.

19. Polar Covalent bond
A bond formed by the mutual sharing of electrons between the
atoms of different elements.

21. Properties of Covalent compounds
Low melting points and boiling points.
Mostly insoluble in water
Low enthalpies of fusion and vaporization
Mostly in liquid or gaseous state
Poor electrical and thermal conductivity

22. Coordinate Covalent bond
A bond formed by the sharing of electrons but shared pair
donated by one of the atoms called donor while other that
accept called acceptor.

24. Metallic bond
A bond in which metallic cations are held together by sea of
delocalized electrons.
Key:
Metal + Metal

26. Properties of Metallic solids
High thermal and electrical conductivity.
Luster and high reflectivity.
Malleability and ductility.
(They can be beaten or shaped without fracture)
Variability of mechanical strengths
(ranging from soft alkali metals to Tungsten, which is hard)

27. Questions to clear the concept
Which bond is in all gases?
Which bond is in all metals?
Which bond is in most of slats?
Which bond is in liquids?

29. THANK YOU