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Byju's Answer
Standard XII
Chemistry
Isoelectronic Species
Arrange Na+...
Question
Arrange
N
a
+
,
M
G
2
+
,
O
2
−
,
F
−
A
l
3
+
,
N
3
−
(each having 10 electrons) in increasing ionic radii.
A
A
l
3
+
<
M
g
2
+
<
N
a
+
<
F
−
<
O
2
−
<
N
3
−
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B
N
3
−
<
O
2
<
F
−
<
N
a
+
<
M
g
2
+
<
A
l
3
+
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C
A
l
3
+
<
M
g
2
+
<
F
−
<
N
a
+
<
O
2
−
<
N
3
−
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D
None of these
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Solution
The correct option is
A
A
l
3
+
<
M
g
2
+
<
N
a
+
<
F
−
<
O
2
−
<
N
3
−
As we know,
r
n
∝
1
Z
(for isoelectronic species)
A
l
3
+
<
M
g
2
+
<
N
a
+
<
F
−
<
O
2
−
<
N
3
−
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0
Similar questions
Q.
Arrange them in the order of increasing ionic radii.
N3+, O2-, F-, Na+, Mg2+, and Al3+
Q.
Arrange the following species in the increasing order of their ionic radii, giving reasons.
M
g
2
+
,
O
2
−
A
l
3
+
;
N
3
−
,
F
−
,
N
a
+
Q.
Among the following, the isoelectronic species is/ are:
(i)
O
2
−
,
F
−
,
N
a
+
,
M
g
2
+
(ii)
N
a
+
,
M
g
+
,
A
l
3
+
,
F
−
(iii)
N
3
−
,
O
2
−
,
F
−
,
N
e
Q.
Consider the following species :
N
3
−
,
O
2
−
,
F
−
,
N
a
+
,
M
g
2
+
and
A
l
3
+
.
(a) What is common in them?
(b) Arrange them in the order of increasing ionic radii.
Q.
Which of the following species are isoelectronic?
i
)
N
e
i
i
)
O
2
−
i
i
i
)
M
g
2
+
i
v
)
F
v
)
A
l
3
+
v
i
)
C
l
−
v
i
i
)
K
v
i
i
i
)
N
a
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