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Byju's Answer
Standard X
Chemistry
Lone Pairs and Bond Pairs
Why are lp-lp...
Question
Why are lp-lp repulsion greater than lp-bp and bp-bp?
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Solution
D
e
a
r
S
t
u
d
e
n
t
L
o
n
e
p
a
i
r
s
a
r
e
n
o
t
i
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v
o
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l
y
.
B
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b
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b
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.
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h
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o
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f
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p
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s
i
o
n
i
s
:
l
p
-
l
p
>
b
p
-
l
p
>
b
p
-
b
p
R
e
g
a
r
d
s
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Similar questions
Q.
The number of lp-bp repulsion present in
C
l
F
3
at nearly 90 degree angle are_______.
Q.
The number of lp-bp repulsion present in
C
l
F
3
at nearly 90 degree angle are
:
Q.
Assertion :
N
-atom in
N
H
3
is
s
p
3
hybridised and bond angle is
107
o
. Reason:
l
p
−
b
p
repulsion (VSEPR) decreases bond angle to
107
o
.
Q.
Give the correct order of initials
T
or
F
for the following statements. Use
T
if statement is true and use
F
if the statement is false:
(I) The order of repulsion between pair of electrons is
l
p
−
l
p
>
l
p
−
b
p
>
b
p
−
b
p
where
l
p
=
lone pair
,
b
p
=
bond papir
(II) In general, as the number of lone pair of electrons on central atom increases , value of bond angle from normal bond angle also increases.
(III) The number of lone pair on
O
in
H
2
O
is
2
while on
N
in
N
H
3
is 1.
(IV) The structures of xenon flourides and xenon oxyflourides could not be explained on the basis of VSEPR theory.
Q.
Choose the correct order of repulsions between bond pairs and lone pairs of electrons.
LP: lone pair of electrons
BP: bond pair of electrons
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