Chemical Bonding And Molecular Structure Ques 3
3. In which of the following ionisation processes the bond energy increases and the magnetic behaviour changes from paramagnetic to diamagnetic?
[NEET Kar. 2013]
(a) $N_2 \to N_2^{+}$
(c) $C_2 \to C_2^{+}$
(b) $O_2 \to O_2^{+}$
(d) $NO \to NO^{+}$
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Answer:
Correct Answer: 3.(d)
Solution:
(d)
$\hspace{15mm} N_2 \longrightarrow N_2^+ $
$ \hspace{8mm} \text{B.O. } 3 \hspace{10mm} 2.5 $
Bond energy decreases Magnetic behaviour changes from diamagnetic to paramagnetic
(b)
$\hspace{15mm} O_2 \longrightarrow O_2^+ $
$ \hspace{8mm} \text{B.O. } 2 \hspace{10mm} 2.5 $
Bond energy increases
Magnetic behaviour does not change.
(c)
$\hspace{15mm} C_2 \longrightarrow C_2^+ $
$ \hspace{8mm} \text{B.O. } 2 \hspace{10mm} 2.5 $
Bond energy decreases
Magnetic behaviour changes from diamagnetic to paramagnetic
(d)
$\hspace{15mm} NO \longrightarrow NO^+ $
$ \hspace{8mm} \text{B.O.} 3 \hspace{10mm} 2.5 $
bond energy increases
Magnetic behaviour changes from paramagnetic to diamagnetic
BETA
