Question 12 Marks
Draw the geometry and write the configuration of the geometric iosmers of $\left[ Pt \left( H _2 O \right)_2 Br _2\right]$.
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Question 22 Marks
Write the IUPAC name of the following :
(i) $\left[ Cu \left( H _2 O \right)_4\right]^{+2}$
(ii) $\left[ Co \left( NH _3\right)_6\right] Br _3$
(iii) $\left[ Fe ( CN )_6\right]^{3-}$
(i) $\left[ Cu \left( H _2 O \right)_4\right]^{+2}$
(ii) $\left[ Co \left( NH _3\right)_6\right] Br _3$
(iii) $\left[ Fe ( CN )_6\right]^{3-}$
Answer
View full question & answer→(i) Tetra aqua copper (II) ion
(ii) Hexa amine cobalt (III) bromide
(iii) Hexa cyano ferrate (III) ion.
(ii) Hexa amine cobalt (III) bromide
(iii) Hexa cyano ferrate (III) ion.
Question 32 Marks
Draw the energy bond present in the carbonyl complex ?
Answer
View full question & answer→The synergic bond in carbonyl complex is depicted as follows:
Question 42 Marks
What is coordination isomerism? Explain.
Answer
View full question & answer→Coordination isomerism : This isomerism occurs when there is an interchange of ligands between the cationic and anionic coordination powers of different metals present. Complex $\left[ Co \left( NH _3\right)_6\right]\left[ Cr ( CN )_6\right]$ in which $NH _3$ is bonded to $Co ^{2+}$ and $CN ^{-}$
$CN ^{-}$is bonded to $Cr ^{3+}$ whereas in its coordination isomer $\left[ Cr \left( NH _3\right)_6\right]\left[ Co \left( CN _6\right)\right], NH _3$ is bonded to $Cr ^{3+}$ and $CN ^{-}$is bonded to $Co ^{3+}$.
Question 52 Marks
Explanation of ionization isomerism with example.
Answer
View full question & answer→Ionization isomerism: When the cation present in a complex is itself a possible ligand and it forms another complex by replacing a ligand, then the complex obtained is called ionization isomerism and this property is called ionization isomerism.
Example : (i) $\left[ Co \left( NH _3\right)_5 SO _4\right] Br$ and
(ii) $\left[ Co \left( NH _3\right)_5 Br \right] SO _4$
$Br ^{-}$is obtained by absorption of (i) whereas by ionization
(ii) $SO _4{ }^{2-}$ is obtained.
Example : (i) $\left[ Co \left( NH _3\right)_5 SO _4\right] Br$ and
(ii) $\left[ Co \left( NH _3\right)_5 Br \right] SO _4$
$Br ^{-}$is obtained by absorption of (i) whereas by ionization
(ii) $SO _4{ }^{2-}$ is obtained.
Question 62 Marks
Give examples and IUPAC names of the following types of complexes :
(i) Neutral complex
(ii) Negative complex
(iii) Positive complex.
(i) Neutral complex
(ii) Negative complex
(iii) Positive complex.
Answer
View full question & answer→(i) $Fe ( CO )_3$, Penta carbonyl iron (O).
(ii) $\left[ Co \left( NO _3\right)_6\right]^{3-}$, hexa nitrato cobaltate (III) ion.
(iii) $\left[ Pt \left( NH _3\right)_4 Cl _2\right]^{2+}$, tetra ammine dichlorido platinum
(IV) ion.
(ii) $\left[ Co \left( NO _3\right)_6\right]^{3-}$, hexa nitrato cobaltate (III) ion.
(iii) $\left[ Pt \left( NH _3\right)_4 Cl _2\right]^{2+}$, tetra ammine dichlorido platinum
(IV) ion.
Question 72 Marks
(a) Examples of neutral ligands with special names.
(b) How are positive ligands named? Explain.
(b) How are positive ligands named? Explain.
Answer
View full question & answer→(a) Neutral ligands with special names are as follows $- H _2 O =$ aqua, $CS =$ thiocarbonyl, $NH _3=$ Ammine, NO $=$ Nitrosyl, CO = Carbonyl, NS = Thionitrosyl.
(b) Suffix (ium) attached at the end of the name of positive ligands.
$
\text { Example }-\stackrel{+}{N} O=\text { Nitrosilium, } \quad NH_2-\stackrel{+}{N} H_3=
$
Hydrazinium and $\stackrel{+}{ N } O _2=$ nitronium.
(b) Suffix (ium) attached at the end of the name of positive ligands.
$
\text { Example }-\stackrel{+}{N} O=\text { Nitrosilium, } \quad NH_2-\stackrel{+}{N} H_3=
$
Hydrazinium and $\stackrel{+}{ N } O _2=$ nitronium.
Question 82 Marks
Draw the structures of polar isomers of $\left[ Co ( e )_3\right]^{3+}$
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Draw the geometric isomers of $Pt \left( NH _3\right)_2 Cl _2$.
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Draw optical isomers of cis $\left[ PtCl _2( en )_2\right]$.
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Draw cis and trans isomers of $\left[ Pt \left( NH _3\right)_4 Cl _2\right]^{2+}$.
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