CBSE Class 12 (Science) Coordination Compounds — practice questions
82 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice CBSE Class 12 (Science) Coordination Compounds in the app →Among $\mathrm{Sc^{3+}}$, $\mathrm{Ti^{4+}}$, $\mathrm{V^{2+}}$ and $\mathrm{Zn^{2+}}$, which is **coloured** Ethylenediamine (en) is best described as a: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 $[\mathrm{Co(NH_3)_6}]^{3+}$ isCis-trans isomerism is observed inCoordination 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?Which Swiss chemist first formulated the structural ideas of coordination compounds?In which year did Alfred Werner receive the Nobel Prize for coordination theory?How many moles of AgCl are precipitated from one mole of yellow CoCl3.6NH3 with excess AgNO3?Purple CoCl3.5NH3 gives how many moles of AgCl per mole with excess silver nitrate?The solution conductivity of [Co(NH3)6]Cl3 corresponds to which type of electrolyte?In Werner's theory, secondary valences are satisfied by which species?According to Werner, primary valences are normally satisfied by which kind of species?The primary valence of the metal in binary salts CrCl3, CoCl2 and PdCl2 respectively isThe green and violet forms of CoCl3.4NH3 have the same formula but different properties, so they areWhich of the following is a double salt that dissociates completely into simple ions in water?Ions or molecules bound to the central atom in a coordination entity are known asA ligand such as Cl-, H2O or NH3 that binds through a single donor atom is calledEthane-1,2-diamine binds through two nitrogen atoms. What type of ligand is it?A ligand with two different donor atoms, either of which can bind the metal, is calledThe thiocyanate ion can coordinate to a metal through which atoms?The coordination number of a metal ion is the number ofWhat is the coordination number of Co in [Co(en)3]3+, where en is didentate?Coordination number is fixed by the number of which bonds formed with the central ion?What oxidation number does copper have in [Cu(CN)4]3-?A complex in which the metal is bound to only one kind of donor group is calledWhen writing the formula of a mononuclear coordination entity, which is listed first?In a coordination formula, ligands after the metal are listed in what order?What is the name used for the H2O ligand in coordination compounds?The NO ligand is named in coordination compounds asWhich prefix is used for three ligands whose own names already contain numerical prefixes?In a complex anion, iron is named with which stem?What is the oxidation state of cobalt in [Co(en)3]2(SO4)3?The formula of potassium tetrahydroxidozincate(II) isWhich is the formula for potassium trioxalatoaluminate(III)?The compound [Ag(NH3)2][Ag(CN)2] is namedCompounds with the same chemical formula but a different arrangement of atoms are calledWhich type of isomers has different bonds rather than different spatial arrangement?Which of these is a form of stereoisomerism in coordination compounds?Geometrical isomerism arises in which type of complexes?How many geometrical isomers does a square planar complex of type MABXL have?Why do tetrahedral complexes not show geometrical isomerism?Optical isomers are best described asWhich form of [CrCl2(ox)2]3- is chiral and optically active?[Co(NH3)6][Cr(CN)6] and [Cr(NH3)6][Co(CN)6] are examples of which isomerism?[Co(NH3)5(SO4)]Br and [Co(NH3)5Br]SO4 show which type of isomerism?[Cr(H2O)6]Cl3 and [Cr(H2O)5Cl]Cl2.H2O are what kind of isomers?Which question could Werner's theory not answer?Which theory treats the metal-ligand bond as purely electrostatic?How many unpaired electrons does tetrahedral [NiCl4]2- contain?Which statement about hybrid orbitals in valence bond theory is correct?How many unpaired electrons does [Mn(CN)6]3- have?Which limitation applies to valence bond theory for complexes?In crystal field theory, anionic ligands are treated asWhich d orbitals point toward the ligands in an octahedral complex and rise in energy?An experimentally determined order of ligands by increasing field strength is theWhich ligand produces the strongest crystal field splitting?For the same metal, ligands and distances, tetrahedral splitting is what fraction of octahedral splitting?Why are low spin tetrahedral complexes rarely observed?The colour of a complex is complementary to the colour that itRuby gets its colour from which ion in an aluminium oxide lattice?Which carbonyl is trigonal bipyramidal?The synergic effect in metal carbonyls results in what?The M-C pi bond in a metal carbonyl forms by donation from a filled metal d orbital into which orbital?In extracting gold, which metal is added to the [Au(CN)2]- solution to separate gold?Chlorophyll is a coordination compound of which metal?Impure nickel can be purified by first converting it into which compound?