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Byju's Answer
Standard XII
Chemistry
Valence Bond Theory
SF4,BF4-,ClF3...
Question
S
F
4
,
B
F
−
4
,
C
l
F
3
,
A
s
F
3
,
P
C
l
5
,
B
r
F
5
,
X
e
F
4
,
S
F
6
The number of species that have two lone pairs of electrons in their central atom is/are
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Solution
Species No. of lone pair of electron
present on central atom
S
F
4
1
B
F
−
4
0
C
l
F
3
2
A
s
F
3
1
P
C
l
5
0
B
r
F
5
1
X
e
F
4
2
S
F
6
0
C
l
F
3
has T-shape
X
e
F
4
has Square planar shape
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1
Similar questions
Q.
The number of species below that has two lone pairs of electrons in their central atom is______(Round off to the Nearest Integer.)
S
F
4
,
B
F
–
4
,
C
I
F
3
,
A
s
F
3
,
P
C
l
5
,
B
r
F
5
,
X
e
F
4
,
S
F
6
Q.
Consider the following molecules/ions:
(1)
S
F
4
(2)
C
F
4
(3)
X
e
F
4
(4)
B
F
4
−
Which pair doesnot contain lone pair of electrons around its central atom?
Q.
Number of bonding electron pairs and number of lone pairs of electrons in
C
/
F
3
,
S
F
4
,
B
r
F
5
respectively are:
Q.
How many of the following interhalogen species have 2 lone pairs of electrons on the central atom?
C
l
F
3
,
C
l
F
−
2
,
C
l
F
5
and
I
C
l
+
2
Q.
Molecular shapes of
S
F
4
,
C
F
4
and
X
e
F
4
and the number of lone pairs on the central atom are respectively.
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