JEE Main Chemistry - Coordination Compounds and Organometallics
Exam Duration: 60 Mins Total Questions : 30
Complex compounds Cu(NH3)4SO4 and Pt(NH3)4Cl4 have coordination numbers
- (a)
2 and 4 respectively
- (b)
2 and 6 respectively
- (c)
4 and 6 respectively
- (d)
3 and 6 respectively
Which one of the following compounds will not exhibit geometrical isomerism?
- (a)
Pt(NH3)2Cl2
- (b)
[Co(NH3)4Cl2]+
- (c)
[Co(en3)]3+
- (d)
[Co(NH3)5NO2]Cl2
The oxidation state of Pt [(en)H2O)4(NO2)Cl]2+ is
- (a)
+2
- (b)
+4
- (c)
+6
- (d)
-4
Bonding in coordination compounds in solution is explained by
- (a)
Valence bond theory
- (b)
Crystal field theory
- (c)
Lingand field theory
- (d)
ALL OF THE ABOVE
Which one of the following compounds is most stable?
- (a)
[Ag(NH3)2]Cl
- (b)
[Cu(NH3)4]SO4
- (c)
K2[Cu(CN)4]
- (d)
[CO(NH3)5]Cl3
In a complex [Pt(NH3)2Cl2], the distance between Cl- and Cl- is 2.28 Ao. The possible geomentry of the complex can be
- (a)
square pyramidal
- (b)
tetrahedral
- (c)
cis square planer
- (d)
trans square planar
In an isomer of [Co(NH3)4Cl2] two chlorine atoms and the cobalt atom are all collinear. This is a
- (a)
linkage isomer
- (b)
coordination sphere isomer
- (c)
trans isomer
- (d)
cis isomer
Fe2(Co)9 is diamagnetic. Which of the following reasons is correct?
- (a)
Presence of one Co as bridge group
- (b)
Presecse of monodentate ligand
- (c)
Metel-Metal (Fe-Fe) bond in molecule
- (d)
Resonance hybridization of CO
Chlorophyll contains the metal
- (a)
Al
- (b)
Fe
- (c)
Mg
- (d)
Ca
A solution of a potassium ferrocyanide would contain......ions
- (a)
2
- (b)
3
- (c)
4
- (d)
5
K4[Fe(CN)6]is called
- (a)
Potassium hexacyanoferrate (II)
- (b)
Potassium ferricyanide
- (c)
Potassium hexacyanoferrate (III)
- (d)
Praussian blue
The possiible number of isomers for the complex [MCl2Br2]SO4 is
- (a)
1
- (b)
2
- (c)
4
- (d)
5
Amongst the following ions which one has the highest paramagnetism?
- (a)
[Cr(H2O)6]+3
- (b)
[Fe(H2O)6]2+
- (c)
[Cu(H2O)6]2+
- (d)
[Zn(H2O)6]2+
Which one of the following is not expected to show paramagnetism?
- (a)
[Ni(H2O)6]2+
- (b)
Ni(CO)4
- (c)
[Zn(NH3)4]2+
- (d)
[Co(NH3)6]+3
Geometrical isomerism is shown by
- (a)
\([Ni(NH_{3})_{5}Br]^{+}\)
- (b)
\([Cr(NH_{3})_{4}(en)]^{3+}\)
- (c)
\([Co(en)_{3}]^{3+}\)
- (d)
\([Co(NH_{3})_{2}(en)_{2}]^{3+}\)
The complexes \([Ni(CN)_{4}]^{2-}\) and \([Ni(CO)_{4}]\)
- (a)
contains Ni atom in same oxidation state in both the complexes
- (b)
possess square planar geometry
- (c)
possess tetrahedral geometry
- (d)
have square planar and tetrahedral geometry respectively
Crystal field stabilisation energy of \(d^{4}\) (high spin) complex is
- (a)
\(-1.8\ \Delta_{0}\)
- (b)
\(-1.2\ \Delta_{0}\)
- (c)
\(-1.6\ \Delta_{0}\)
- (d)
\(-0.6\ \Delta_{0}\)
When EDTA solution is added to \(Mg^{2+}\) ion solution, then the incorrect statement regarding the reaction will be
- (a)
four coordinate sites of \(Mg^{2+}\) are occupied byEDTA and remaining two sites are occupied by water molecules
- (b)
all six coordinate sites of \(Mg^{2+}\) are occupied
- (c)
pH of the solution decreases
- (d)
colourless \([Mg-EDTA]^{2-}\) chelate is formed
The number of isomers of \([Cu^{II}(NH_{3})_{4}] [Pt^{II}Cl_{4}]\) are
- (a)
6
- (b)
3
- (c)
4
- (d)
5
Amongst the following, cis-trans isomerism is shown by
- (a)
\(Ma_{4}\)
- (b)
\(M(aa')_{2}\) [where aa' are unsymmetrical ligands]
- (c)
\(Ma_{3}b\)
- (d)
Mabcd [where a , b, c, d are unidentate ligands]
Coordination number of Cr is six. A complex ion of Cr with \(C_{2}O^{2-}_{4}\) , en and superoxide ion, \({O}^{-}_{2}\) has the formula, \([Cr(C_{2}O_{4})_{x}(en)_{y}(O_{2})_{z}]^{-}. \) The ratio x:y:z will be
- (a)
1 :1:1
- (b)
1:1:2
- (c)
1:2:2
- (d)
2:1:1
The octahedral complex of a metal ion \(M^{3+}\) with four monodentate ligands \(L_{1},L_{2},L_{3} \ and \ L_{4}\) absorb wavelengths in the region of red, green,yellow and blue respectively. The increasing order of ligand strength of the four ligands is
- (a)
\(L_{4}
- (b)
\(L_{1} < L_{3},
- (c)
\(L_{3} < L_{2},
- (d)
\(L_{1} < L_{2}, < L_{4} < L_{3}\)
The equation which is balanced and represents the correct product (s) is
- (a)
\(Li_{2}O + 2KCl \rightarrow 2LiCl + K_{2}O\)
- (b)
\([CoCl(NH_{3})_{5}]^{+} + 5H^{+} \rightarrow Co^{2+} + 5NH_{4}^{+} + Cl^{-}\)
- (c)
\([Mg(H_{2}O)_{6}]^{2+} + (EDTA)^{4-} \xrightarrow[NaoH]{excess} [Mg(EDTA)]^{2+} + 6H_{2}O\)
- (d)
\(CuSO_{4} + 4KCN \longrightarrow K_{2}[Cu(CN)_{4}]+K_{2}SO_{4}\)
Which of the following pairs represents linkage isomers?
- (a)
\([Pd(PPh_{3})_{2}(NCS)_{2}] \ and \ [Pd(PPh_{3})_{2}(SCN)_{2}]\)
- (b)
\([Co(NH_{3})_{5}NO_{3}]SO_{4} \ and \ [Co(NH_{3})_{5}SO_{4}]NO_{3}\)
- (c)
\([PtCl_{2}(NH_{3})_{4}]Br_{2} \ and \ [PtBr_{2}(NH_{3})_{4}]Cl_{2}\)
- (d)
\([Cu(NH_{3})_{4}]\ [PtCl_{4}] \ and \ [Pt(NH_{3})_{4}] \ [CuCl_{4}]\)
How many EDTA (ethylenediamine-tetraacetic acid) molecules are required to make an octahedral complex with a \(Ca^{2+}\) ion?
- (a)
Six
- (b)
Three
- (c)
One
- (d)
Two
Which one has largest number of isomers?
- (a)
\([Co(en)_{2}Cl_{2}]^{+}\)
- (b)
\([Co(NH_{3})_{5}Cl]^{2+}\)
- (c)
\([Ir(PR_{3})_{2}H(Co)]^{2+}\)
- (d)
\([Ru(NH_{3})Cl_{2}]^{+}\)
One mole of \(Co[NH_{3}]_{5}Cl_{3}\) gives 3 moles of ions on dissolution in water. One mole of this reacts with two moles of \(AgNO_{3}\) to give two moles of AgCl. The complex is
- (a)
\([Co(NH_{3})_{4}Cl_{2}]Cl.NH_{3}\)
- (b)
\([Co(NH_{3})_{4}Cl]Cl_{2}.NH_{3}\)
- (c)
\([Co(NH_{3})_{5}Cl]Cl_{2}\)
- (d)
\([Co(NH_{3})_{3}Cl_{3}].2 \ NH_{3}\)