1
AIEEE 2008
MCQ (Single Correct Answer)
+4
-1
Which of the following pair of species have the same bond order?
A
CN- and NO+
B
CN- and CN+
C
$$O_2^-$$ and CN-
D
NO+ and CN+
2
AIEEE 2007
MCQ (Single Correct Answer)
+4
-1
Which of the following species exhibits the diamagnetic behaviour?
A
$$O_2^{2−}$$
B
NO
C
$$O_2^+$$
D
O2
3
AIEEE 2007
MCQ (Single Correct Answer)
+4
-1
The charge/size ratio of a cation determines its polarizing power. Which one of the following sequences represents the increasing order of the polarizinig order of the polarizing power of the cationic species, K+, Ca2+, Mg2+, Be2+?
A
Mg2+ < Be2+ < K+ < Ca2+
B
K+ < Ca2+ < Mg2+ < Be2+
C
Be2+ < K+ < Ca2+ < Mg2+
D
Ca2+ < Mg2+ < Be2+ < K+
4
AIEEE 2007
MCQ (Single Correct Answer)
+4
-1
In which of the following ionization processes, the bond order has increased and the magnetic behaviour has changed?
A
$$C_2 \to C_2^+$$
B
$$N_2 \to N_2^+$$
C
$$NO \to NO^+$$
D
$$O_2 \to O_2^+$$
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