NEET UG Coordination Compounds — practice questions
68 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice NEET UG Coordination Compounds in the app →In Werner's theory of coordination compounds, the *secondary valence* of a metal:1 mol of CoCl₃·6NH₃ (yellow) gives how many moles of AgCl on adding excess AgNO₃?1 mol of CoCl₃·4NH₃ (green or violet) gives how many moles of AgCl?In a coordination compound, the central metal atom/ion is best classified as a:Ethylenediaminetetraacetate (EDTA⁴⁻) is what type of ligand?An ambidentate ligand is one that:In the coordination compound K₃[Fe(CN)₆], the coordination sphere is:In K₃[Fe(C₂O₄)₃], the oxidation state of Fe is:In [Ni(CO)₄], the oxidation state of Ni is:Complexes in which the metal is bound to only one kind of donor group, e.g., [Co(NH₃)₆]³⁺, are called:The IUPAC name of [Co(NH₃)₆]Cl₃ is:The IUPAC name of K₃[Fe(CN)₆] is:In writing the formula of a coordination entity, the ligands are listed:In the name 'tris(ethane-1,2-diamine)cobalt(III) sulphate' for [Co(en)₃]₂(SO₄)₃, why is 'tris' used instead of
Which of the followiIn the octahedral complex [Co(NH₃)₃(NO₂)₃], the two geometrical isomers are called:Linkage isomerism arises from:In [Co(NH₃)₆]³⁺, the hybridisation of Co and the resulting magnetic behaviour are:[NiCl₄]²⁻ and [Ni(CN)₄]²⁻ have the same coordination number 4 but different geometries because:The spin-only magnetic moment μ (in Bohr Magnetons, BM) for n unpaired electrons is given by:In the spectrochemical series, ligands are arranged in order of their field strength. The correct order (weak [Ni(CO)₄], [Fe(CO)₅] and [Cr(CO)₆] are respectively:Chlorophyll, haemoglobin and vitamin B₁₂ are coordination compounds of:Hardness of water is estimated by titration with:Among the following complexes
$\mathrm{K}_3[\mathrm{Fe}(\mathrm{CN})_6](\mathrm{K}),[\mathrm{Co}(\mathrm{NH}_The hybridization of Fe in $\mathrm{K}_4[\mathrm{Fe}(\mathrm{CN})_6]$ complex isEthylenediamine (en) is best described as a:In an octahedral complex like $[Co(NH_3)_6]^{3+}$, the coordination number of cobalt is:The complex $[Pt(NH_3)_2Cl_2]$ (square planar) shows:In crystal field theory, the d-orbitals of an octahedral metal complex split into:In Werner's theory of coordination compounds, the PRIMARY valency corresponds to:The coordination number 6 most commonly gives which geometry?The IUPAC name of K3[Fe(CN)6] is:The drug CISPLATIN has the formula [Pt(NH3)2Cl2]. Its anti-cancer activity comes from the:In Valence Bond Theory, an octahedral LOW-SPIN complex like [Co(NH3)6]³⁺ uses which hybridisation?In Crystal Field Theory, the 5 d-orbitals in an OCTAHEDRAL field split into:In the spectrochemical series, which ligand is the STRONGEST field?The unusual stability of EDTA-metal complexes is mainly due to the:The biological molecule HAEMOGLOBIN contains which metal at its centre?A COORDINATION COMPOUND consists of a central metal atom (or ion) BONDED to a set of surrounding molecules or The COORDINATION NUMBER of the central metal in a complex isA ligand that has ONLY ONE donor atom (which forms a single bond to the central metal) is calledIn the complex $[\mathrm{Co(NH_3)_5\,Cl}]\mathrm{Cl_2}$, the oxidation state of cobalt isETHYLENEDIAMINETETRAACETATE (EDTA) is a famous polydentate ligand. It isThe IUPAC name of $[\mathrm{Co(NH_3)_6}]^{3+}$ isIn CRYSTAL FIELD THEORY (CFT) for an OCTAHEDRAL complex, the five degenerate d-orbitals of the free metal ion $[\mathrm{Fe(CN)_6}]^{4-}$ has $\mathrm{CN^-}$ ligands, which are STRONG-FIELD ligands. The complex isCis-trans isomerism is observed inWhich of the following best states the CHELATE EFFECT?Coordination compounds of transition metals are often COLOURED. CFT explains this colour as arising from$[\mathrm{Ni(CO)_4}]$ is tetrahedral and diamagnetic. The oxidation state of nickel in this complex isThe HEXACYANIDOFERRATE(II) ion $[\mathrm{Fe(CN)_6}]^{4-}$ contains iron in oxidation stateWhich of the following coordination compounds shows OPTICAL ISOMERISM?Werner used solution conductivity + AgCl precipitation of Co(III)-chloride-ammonia compounds. For 1 mol of CoCFor 1 mol of CoCl₃·4NH₃ (green or violet isomer), moles of AgCl precipitated by excess AgNO₃ isEDTA⁴⁻ acts as which type of ligand when fully coordinated to a metal ion?The oxidation state of Fe in K₄[Fe(CN)₆] isThe coordination number of Fe in [Fe(C₂O₄)₃]³⁻ isWhich of these ligands is ambidentate — capable of binding through either of two different donor atoms?The IUPAC name of [Ni(NH₃)₆]Cl₂ isWhich coordination polyhedron does [Ni(CO)₄] adopt?Which of the following is a homoleptic complex?The primary and secondary valences of Co in [Co(NH₃)₆]Cl₃ are respectivelyChelate complexes tend to be more stable than similar complexes with unidentate ligands. This effect is calledThe correct order of ligand denticity, from smallest to largest, isThe coordination sphere of K₄[Fe(CN)₆] isThe correct IUPAC name of [NiCl₂(PPh₃)₂] isWhich of the following is TRUE about a double salt vs a complex?