List of top Chemistry Questions on Coordination Compounds asked in UP Board XII

$[NiCl_4]^{2-}$ is paramagnetic while $[Ni(CO)_4]$ is diamagnetic even though both are tetrahedral. Why?
Explain valence bond theory in coordination compounds.
Compound of which transition metal ion is colourless?
The co-ordination number of Cu in [Cu(CN)$_4$]$^{3-$ ion is:}
Write the IUPAC names of the following coordinate compounds:
(i) [CrCl$_2$(en)]Cl
(ii) Cs[FeCl$_4$]
(iii) K$_3$[Co(C$_2$O$_4$)$_3$]
(iv) [CoCl$_3$(NH$_3$)$_3$]
Explain unidentate and bidentate ligands giving examples.
Which of the following ions does not form coordination compound?
Write IUPAC names of the following:
(i) K$_2$[HgI$_4$]
(ii) [Cu(NH$_3$)$_4$]SO$_4$
(iii) K$_3$[Al(C$_2$O$_4$)$_3$]
(iv) [Cr(CO)$_6$]
Cu(OH)$_2$ is soluble in NH$_4$OH solution but not in NaOH solution. Why?
The value of $x$ in the complex ion [Ni(CN)$_4$]$^x$ is –
Write IUPAC names of the following:
(i) K$_3$[AlF$_6$]
(ii) [Fe(H$_2$O)$_6$]Cl$_2$
(iii) [Co(NH$_3$)$_5$Cl]SO$_4$
(iv) K$_3$[Fe(CN)$_6$]
Prove with example that [Co(NH$_3$)$_5$Cl]SO$_4$ and [Co(NH$_3$)$_5$SO$_4$]Cl are ionisation isomers.
Total how many ions are there in [Co(NH$_3$)$_5$Cl]Cl$_2$ solution?
Write the formula of the following coordination compounds:
(i) Hexa aqua chromium (III) chloride
(ii) Dichlorido diammin e platinum (II)
(iii) Hexa ammine platinum (IV) chloride
(iv) Sodium penta cyano nitrosyl ferrate (II)
Write formula of the following coordination compounds:
(x) Tetraammine diaqua cobalt (III) chloride
(y) Potassium trioxalato chromate (III)
The colour of dilute solutions of [Fe(CN)$_6$]$^{4-$ and [Fe(H$_2$O)$_6$]$^{2+}$ are different. Explain.}
The spin-only magnetic moment value of \([\mathrm{MnBr}_4]^{2-}\) is \(5.9\,\mathrm{BM}\). What will be the geometry of the complex ion?
Oxidation number of cobalt in K[Co(CO)$_4$] is
Write the oxidation states, distribution of d-orbitals and coordination number of central metal of following complexes:
Write IUPAC name of the following complexes: (x) \([Co(NH_3)_5Cl]Cl_2\) , (y) \(K_2[Ni(CN)_4]\)
Show the geometrical isomers of \([Fe(NH_3)_2(CN)_4]\).
How many ions will be generated from the solution of the complex \( [Co(NH_3)_6]Cl_2 \)?
Write short notes on the changes in atomic and ionic sizes and ionization enthalpy of transition metals.
\([Cr(NH_3)_6]^{3+}\) is paramagnetic while \([Ni(CN)_4]^{2+}\) is diamagnetic. Explain on the basis of valence bond theory.
The coordination number of Co in \([Co(NH_3)_4Cl_2]Cl\) is