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12
MCQ (Single Correct Answer)

Which of the following species is not expected to be a ligand?

A
NO
B
$\mathrm{NH}_4^{+}$
C
$\mathrm{NH}_2 \mathrm{CH}_2 \mathrm{CH}_2 \mathrm{NH}_2$
D
CO
13
MCQ (Single Correct Answer)

What kind of isomerism exists between $\left[\mathrm{Cr}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right] \mathrm{Cl}_3$ (violet) and $\left[\mathrm{Cr}\left(\mathrm{H}_2 \mathrm{O}\right)_5 \mathrm{Cl}\right] \mathrm{Cl}_2 \cdot \mathrm{H}_2 \mathrm{O}$ (greyish-green)?

A
Linkage isomerism
B
Solvate isomerism
C
Ionisation isomerism
D
Coordination isomerism
14
MCQ (Single Correct Answer)

IUPAC name of $\left[\mathrm{Pt}\left(\mathrm{NH}_3\right)_2 \mathrm{Cl}\left(\mathrm{NO}_2\right)\right]$ is

A
Platinum diaminechloronitrite
B
Chloronitrito-N-ammineplatinum (II)
C
Diamminechloridonitrito-N-platinum (II)
D
Diamminechloronitrito-N-platinate (II)
15
MCQ (Multiple Correct Answer)

Atomic number of Mn. Fe and Co are 25, 26 and 27 respectively. Which of the following inner orbital octahedral complex ions are diamagnetic?

A
$\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}$
B
$\left[\mathrm{Mn}(\mathrm{CN})_6\right]^{3-}$
C
$\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{4-}$
D
$\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{3-}$
16
MCQ (Multiple Correct Answer)

Atomic number of $\mathrm{Mn}, \mathrm{Fe}, \mathrm{Co}$ and Ni are $25,26,27$ and 28 respectively. Which of the following outer orbital octahedral complexes have same number of unpaired electrons?

A
$\left[\mathrm{MnCl}_6\right]^{3-}$
B
$\left[\mathrm{FeF}_6\right]^{3-}$
C
$\left[\mathrm{CoF}_6\right]^{3-}$
D
$\left[\mathrm{Ni}\left(\mathrm{NH}_3\right)_6\right]^{2+}$
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