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Byju's Answer
Standard XII
Chemistry
Plane Polarised Light
The configura...
Question
The configuration of the C-2 epimer of D-glucose is:
A
2R, 3S, 4R, 5S
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B
2S 3S, 4R, 5R
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C
2S, 3R, 4S, 5R
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D
2R, 3S, 4R, 5R
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Solution
The correct option is
B
2S 3S, 4R, 5R
From the figure, it can be seen that configuration of the C-2 epimer of D-glucose is
−
2S 3S, 4R, 5R.
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Similar questions
Q.
Arrange the orbitals in the increasing order of their energy
3
p
x
,
2
s
,
4
d
x
y
,
3
s
,
4
p
z
,
3
p
y
,
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Q.
Following are the configuration of
4
atoms.
P
=
[
N
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3
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=
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r
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3
d
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4
s
2
4
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3
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Incorrect statement is:
Q.
The excepted ground state configuration for
C
u
is:
1
s
2
2
s
2
2
p
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3
s
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3
p
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4
s
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3
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The actual configuration is:
1
s
2
2
s
2
2
p
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3
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3
p
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4
s
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3
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Why is the true electron configuration different?
Q.
Group the following electronic configurations in pairs that would have different chemical properties of their atoms
(a)
1
s
2
,
2
s
2
,
2
p
5
(b)
1
s
2
,
2
s
1
(c)
1
s
2
,
2
s
2
,
2
p
6
(d)
1
s
2
,
2
s
2
,
2
p
6
,
3
s
2
,
3
p
5
(e)
1
s
2
,
2
s
2
,
2
p
6
,
3
s
2
,
3
p
6
,
4
s
1
(f)
1
s
2
,
2
s
2
,
2
p
6
,
3
s
2
3
p
6
,
4
s
2
,
3
d
10
,
4
p
6
Q.
The electronic configuration of the following elements K
19
, Mn
25
, Ca
20
are given.
K
19
= 1s
2
2s
2
2p
6
3s
2
3p
6
4s
x
Mn
25
= 1s
2
2s
2
2p
6
3s
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Ca
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= 1s
2
2s
2
2p
6
3s
2
3p
6
4s
z
The product of x, y, and z is:
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