Select the correct code about complex $[C r (N O_{2}) (N H_{3})_{5}] [Z n C l_{4}]$ :
(I) IUPAC name of compound is pentaamminenitrito-N-chromium (III) tetrachlorozincate(II)
(II) It shows geometrical isomerism
(III) It shows linkage isomerism
(IV) It shows coordination isomerism.

III, IV

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I, III and IV

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II, III and IV

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I, II, III and IV

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Solution

The correct option is C I, II, III and IV
(i) The IUPAC name of the compound $[C r (N O_{2}) (N H_{3})_{5}] [Z n C l_{4}]$ is pentaamminenitrito-N-chromium(III) tetrachlorozincate (II). Here N indicates that nitro group is attached to metal atom through N atom.
(ii) Geometrical isomerism is not possible in this compound.
(iii) Linkage isomerism is possible as nitro ligand is ambidentate ligand and has two donor atoms N and O.
(iv) It exhibits coordination isomers. The coordination isomers are $[C r C l (N H_{3})_{5}] [Z n C l_{3} (N O_{2})], [C r C l_{2} (N H_{3})_{4}] [Z n C l_{2} (N O_{2}) N H_{3}] a n d [Z n (N O_{2}) (N H_{3})_{3}] [C r C l_{4} (N H_{3})_{2}]$ .

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C r (H_{2} O)_{6} C l_{n,}

has a spin only magnetic moment of 3.83 BM. It reacts with

A g N O_{3}

and shows geometrical isomerism. The IUPAC nomenclature of X is :

Q. Most complex compounds have either a coordination number of 4 or 6 and, in both cases, they show stereomerism. They may show geometrical isomerism or optical isomerism or both.

List-I contains complex compounds and List-II contains the number of stereomers they can form and the type of stereomers.

\begin{matrix} List-I & List-II (I) K [P d N H_{3} B r C l F] & (P) Geometrical isomerism (II) [C o (N H_{3})_{3} B r C l F] & (Q) Optical isomerism (III) [C r (N H_{3})_{3} B r_{2} C l] & (R) 3 (IV) [F e B r_{2} (e n)_{2}] N O_{3} & (S) 5 (T) 6 (U) 2 \end{matrix}

Which of the following options has the correct combination considering compounds in List-I and number of their stereoisomers and type in List-II?

Q. Using IUPAC norms write the formulas for the following:

(i) Tetrahydroxidozincate(II)
(ii) Potassium tetrachloridopalladate(II)

(iii) Diamminedichloridoplatinum(II)

(iv) Potassium tetracyanidonickelate(II)
(v) Pentaamminenitrito-O-cobalt(III)
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Compounds showing cannizaro's reaction are
(i) $C H_{3} C H_{2} C H O$ (ii) $C H C l_{2} C H O$ (iii) $(C H_{3})_{3} C - C H O$ (iv) $C_{6} H_{5} C H O$

Q. Consider the following statements and arrange in the order of true/ false as given in the codes.

S_{1}

: The IUPAC name of the compound

[C r (N H_{3})_{5} (N C S)] [Z n C l_{4}]

is pentaamminethiocyanato-N-chromate(III) tetrachlorozincate (II).

S_{2} : C o S O_{4}

is paramagnetic and coloured.

S_{3} : [C o (N H_{3})_{4} (N O_{2})_{2}] N O_{3}

shows ionisation, linkage and geometrical isomerism.

S_{4}

: The C-O bond length in the complex,

[F e (C O)_{5}]

is same as that found in carbon monoxide itself.

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Select the correct code about complex [Cr(NO2)(NH3)5][ZnCl4]:(I) IUPAC name of compound is pentaamminenitrito-N-chromium (III) tetrachlorozincate(II)(II) It shows geometrical isomerism(III) It shows linkage isomerism(IV) It shows coordination isomerism.

Select the correct code about complex $[C r (N O_{2}) (N H_{3})_{5}] [Z n C l_{4}]$ :
(I) IUPAC name of compound is pentaamminenitrito-N-chromium (III) tetrachlorozincate(II)
(II) It shows geometrical isomerism
(III) It shows linkage isomerism
(IV) It shows coordination isomerism.