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Byju's Answer
Standard XII
Chemistry
Anomalous Behaviour of Fluorine
Why the Bond ...
Question
Why the Bond dissociation energy of Cl-Cl is greater than F-F. And why the Bond Dissociation energy of H-F is greater than H-H.
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Q.
Explain why
N
2
has greater bond dissociation energy than
N
+
2
whereas
O
2
has lesser bond dissociation energy than
O
+
2
Q.
Assertion :Bond dissociation energy of
F
2
is smaller than that of
C
l
2
. Reason: Bond dissociation energy is in order
F
2
<
C
l
2
<
B
r
2
<
I
2
.
Q.
N
2
has greater bond energy than
N
2
+
but
O
2
has tower bond dissociation energy then
O
2
+
. Explain.
Q.
Assertion :Bond energy and bond dissociation energy have identical value for diatomic molecules Reason: Greater the bond dissociation energy, less reactive is the bond.
Q.
Heat evolved in the reaction
H
2
+
C
l
2
→
2
H
C
l
is
182
k
J
.
( Bond energies
H
−
H
=
430
k
J
/
m
o
l
e
,
C
l
−
C
l
−
242
k
J
/
m
o
l
e
). The
H
−
C
l
bond energy is:
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Standard XII Chemistry
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