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Byju's Answer
Standard X
Chemistry
Atomic Radius
The ratio of ...
Question
The ratio of radii of
3
r
d
orbit of
L
i
+
2
and
2
n
d
orbit of
H
e
+
is:
A
2
:
3
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B
1
:
3
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C
3
:
3
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D
3
:
1
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Solution
The correct option is
A
2
:
3
r
=
0.529
×
n
2
Z
A
0
r
L
i
+
2
r
H
e
+
=
0.529
×
(
3
)
2
3
0.529
×
(
3
)
2
2
=
2
3
r
L
i
+
2
:
r
H
e
+
=
2
:
3
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