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AIEEE 2008 Solved Paper
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© examsnet.com
Question : 1
Total: 104
Which one of the following constitutes a group of the isoelectronic species?
C
2
2
−
,
O
2
−
,
CO
,
NO
NO
+
,
C
2
2
−
,
cN
,
N
2
CN
−
,
N
2
,
O
2
2
−
,
C
2
2
−
N
2
,
O
2
−
,
NO
+
,
CO
Validate
Solution:
Species
No. of electrons
C
2
2
−
12
+
2
=
14
O
2
−
16
+
1
=
17
CO
6
+
8
=
14
NO
7
+
8
=
15
NO
+
7
+
8
−
1
=
14
C
2
2
−
12
+
2
=
14
CN
−
6
+
7
+
1
=
14
N
2
14
CN
−
6
+
7
+
1
=
14
N
2
14
O
2
2
−
16
+
2
=
18
C
2
12
N
2
14
O
2
−
16
+
1
=
17
NO
+
7
+
8
−
1
=
14
CO
6
+
8
=
14
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