Q: Number of possible isomers for the complex [Co(en)2Cl2]Cl will be: (en = ethylene diamine)

[Co(en)2Cl2Cl2]Cl Possible isomers(i) Geometrical isomers(ii) In trans form plane of symmetry present, so trans form is optically inactive but cis is optically active.Total number of stereoisomer = 2 + 1 = 3

Q: निम्नलिखित में से कौन सा जटिल यौगिक प्रकाशिक समावयवता नहीं दर्शाता है ?

Ma3b3 प्रकार के अष्टफलकीय सहसंयोजी यौगिक ज्यामितिय समावयवता प्रदर्शित करते हैं। यौगिक फेसियल या मेरीडोनल समावयवता दर्शाते हैं तथा दोनो में सममिति तल होता है।

Q: Which of the following can participate in linkage isomerism?

NO2−can participate in linkage isomerism because it may be bonded to metal through nitrogen or through oxygen.[(NH3)5CoNO2]Cl2−Pentaamminenitro cobalt(III) chloride [(NH3)5CoONO]Cl2−Pentaamminenitrito−O− cobalt(III) chloride

Question 1

Number of possible isomers for the complex [Co(en)2​Cl2​]Cl will be: (en = ethylene diamine)

Accepted Answer

[Co(en)2​Cl2​Cl2​]Cl 		Possible isomers(i) 	Geometrical isomers(ii) In trans form plane of symmetry present, so trans form is optically inactive but cis is optically active.Total number of stereoisomer = 2 + 1 = 3

Question 2

The relationship between the following pair [Pt(NH3​)2​Cl2​] and [Pt(NH3​)4​][PtCl4​] is :

Accepted Answer

Polymerization isomerism is not a true isomerism. It is used to denote compounds having the same empirical formula but different molecular formulas or weights. Both the compounds: [Pt(NH3​)2​Cl2​] and [Pt(NH3​)4​][PtCl4​] have the same empirical formula but their molecular weights are different. Hence, are polymerization isomer.

Question 3

The relation between the following is :[Cr(H2​O)6​]Cl3​,[CrCl(H2​O)5​]Cl2​⋅H2​O,[CrCl2​(H2​O)4​]Cl⋅2H2​O

Accepted Answer

The compounds which have the same molecular formula but different water molecules are present as ligand and as water of crystallization.[Cr(H2​O)6​]Cl3​,[CrCl(H2​O)5​]Cl2​⋅H2​O,[CrCl2​(H2​O)4​]Cl⋅2H2​O are hydrate isomers.

Question 4

निम्न में से कौन सा कॉम्प्लेक्स प्रकाशिक समावयवता प्रदर्शित करेगा?(en = ethylenediamine)

Accepted Answer

जब एक अणु अपने दर्पण प्रतिबिम्ब पर पूर्णत: अध्यारोपित नहीं होता है, प्रकाशिक समावयवी बनाता है। अतः जटिल cis[Co(en)2​Cl2​]Cl प्रकाशिक सक्रिय है।

Question 5

वर्ग समतलीय [Pt(Cl)(py)(NH3​)(NH2​OH)]+(py= pyridine ) के ज्यामितीय समावयवियों की संख्या है:

Accepted Answer

M[ABCD] प्रकार का चौकोर समतल जटिल तीन समावयवी बनाता है। ये अवस्थाएं किसी एक लींगेड को स्थिर रखकर अन्य तीनों लीगेंडो का क्रमशः ट्रांस स्थित पर रखकर प्राप्त किया जा सकता है।

Question 6

निम्नलिखित में से कौन सा जटिल यौगिक प्रकाशिक समावयवता नहीं दर्शाता है ?

Accepted Answer

Ma3​b3​ प्रकार के अष्टफलकीय सहसंयोजी यौगिक ज्यामितिय समावयवता प्रदर्शित करते हैं। यौगिक फेसियल या मेरीडोनल समावयवता दर्शाते हैं तथा दोनो में सममिति तल होता है।

Question 7

संकुल [CoCl2​(en)2​] द्वारा प्रदर्शित समावयवता का प्रकार है-

Accepted Answer

दिए गए यौगिक में Co की समन्वय संख्या 6 है तथा जटिल की ज्यामिती अष्टफलकीय है।

Question 8

Which of the following can participate in linkage isomerism?

Accepted Answer

NO2−​can participate in linkage isomerism because it may be bonded to metal through nitrogen or through oxygen.[(NH3​)5​CoNO2​]Cl2​−Pentaamminenitro cobalt(III) chloride [(NH3​)5​CoONO]Cl2​−Pentaamminenitrito−O− cobalt(III) chloride

Question 9

The maximum possible denticities of a ligand given below towards a common transition and inner-transition metal ion, respectively, are

Accepted Answer

The maximum possible denticities of given ligand towards a common transition and inner transition metal ion, are 6 and 8 respectively.The given ligand act as hexadentate ligand in transition metal ion because the common oxidation state shown by them is +3. Whereas in case of inner transition metal ion, its denticity is 8 because their common oxidation state is +4.

Question 10

A similarity between optical and geometrical isomerism is that :

Accepted Answer

Both optical isomerism and geometrical isomerism are examples of stereoisomerism.

Question 11

The species that can have a trans-isomer is (en = ethane −1, 2-diamine, ox = oxalate)

Accepted Answer

[Pt(en)2​(Cl2​)]2+ with formula [M(a−a)2​b2​] will show geometrical isomerism as follows:

Question 12

Which of the following can exhibit geometrical isomerism?

Accepted Answer

[PtCl2​.P(C2​H5​)3​]2​ can exhibit geometrical isomerism, the geometrical isomers are

Question 13

The complexes [Co(NH3​)6​][Cr(C2​O4​)3​] and [Cr(NH3​)6​][Co(C2​O4​)3​]

Accepted Answer

Coordination isomerism is possible when both positive and negative ions of a salt are complex ions and the two isomers differ in distribution of ligands in the cation and the anion.

Question 14

[Co(NH3​)5​SO4​]Br and [Co(NH3​)5​Br]SO4​ are a pair of _____ isomers.

Accepted Answer

​[Co(NH3​)5​SO4​]Br⇌[Co(NH3​)5​SO4​]++Br−[Co(NH3​)5​Br]SO4​⇌[Co(NH3​)5​Br]2++SO42−​​The molecular formula of both of the above compounds is same but on ionisation they give different ions in solution, so they are called ionization isomers.

Question 15

Geometrical isomerism is found in coordination compounds having coordination number:

Accepted Answer

Geometrical isomerism is found in compounds having coordination number 4 (square planar and not tetrahedral shape) as well as coordination number 6.

Question 16

The total number of possible isomers for the complex compound [Cu(NH3​)4​][PtCl4​]

Accepted Answer

1. [Cu(NH3​)4​][PtCl4​]
2. [Cu(NH3​)3​Cl]⋅[PtCl3​(NH3​)]

3. [Cu(NH3​)2​)Cl2​]⋅[PtCl2​(NH3​)2​] cis
4. [Cu(NH3​)2​Cl2​][PtCl2​(NH3​)2​] trans
5. [Cu(NH3​)Cl3​]⋅[Pt(Cl)(NH3​)3​]
6. [Pt(NH3​)4​]⋅[CuCl4​]

Question 17

Which complex is likely to show optical activity?

Accepted Answer

Only cis-octahedral compounds show optical activity.

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