Types Of Bonding Page 2
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1
2
3Formation of covalent bonds
This whole process is
��
��
governed by Coulomb’s Law.
�� = ��
1
2
��
2
q
and q
are the magnitude of
1
2
As two atoms move towards each other, there reaches a point where
the charges, may be + or –
• The nucleus of one atom will attract the valence electrons of
and r is the distance between
the two atoms.
the other atom
o Point A
The reason that the graph
o q
(+) and q
(-) is the driving force to bring the atoms
asymptotes at Y=0 is that as
1
2
the distance between the two
together
�� = ��
��
��
1
2
• As they move closer together, the strength of attraction
atoms gets larger, the value of
��
2
of r2 becomes
becomes greater.
extremely large, so F
o Point B
becomes extremely small and
o q
(+) and q
(-) is the driving force to bring the atoms
1
2
approaches zero.
together
o Strength of attraction is increasing as the distance gets
smaller
The denominator in Coulomb’s Law is smaller,
so the value of the force of attractions
increases.
• As the two atoms overlap, the force of attraction is very high
o Point C
• As the two atoms continue to move closer together repulsion
comes into play
o Point D
o Repulsion between the two nuclei become more
important
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