19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Which of the following statements is correct?
The structures of Ni(CO)4 and Ni(PPh3)2Cl2 are
Cobalt (III) chloride forms several octahedral complexes with ammonia. Which of the following will not give a test of chloride ions with silver nitrate at 25ºC? (AIPMT 2015)
The correct order of the stoichiometries of AgCl formed when AgNO3 in excess is treated with the complexes: CoCl36NH3, CoCl35NH3, CoCl34NH3 respectively is (NEET 2017)
Which of the following complex ions is paramagnetic?
Which of the following complex ions is diamagnetic?
Which of the following octahedral complex ions is diamagnetic?
Which of the following is diamagnetic?
The existence of two different coloured complexes with the composition [Co(NH3)4Cl2] + is due to [CBSE AIPMT2010]
Which of the following complex ions/molecules of nickel is paramagnetic?
The compound which does not show paramagnetism is
Crystal field stabilisation energy for high spin d octahedral complex is [CBSE AIPMT2010]
Which of the following complex ion is not expected to absorb visible light? [CBSE AIPMT 2010]
Assertion: If 4 for [Cu(NH3)4] 2+ is 2.1 × 10 13, its instability constant is 4.76 × 10 –14. Reason: Overall dissociation equilibrium constant varies inversely with formation constant. [AIIMS2010]
Which of the following species is expected to be colourless? [CBSE AIPMT 2010]
The sum of coordination number and oxidation number of the metal M in the complex [M(en)2(C2O4)]Cl (where en is ethylenediamine) is (AIPMT 2015)
Among [Ni(CO)4], [Ni(CN)4]2– and [NiCl4]2–
[Sc(H2O)6]3+ ion is
Four transition metal octahedral complexes, (the choice given below) low spin electron configurations arises only for [DPMT 2010]
Among TiF6 2-, CoF6 3-, Cu2Cl2 and NiCl4 2- (atomic numbers of Ti = 22, Co = 27, Cu = 29, Ni = 28), the colourless species are
The pair having the same magnetic moment is: [At, No. : Cr = 24, Mn = 25, Fe = 26, Co = 27]
Which one of the following is wrongly matched?
Among [NiCO4], [Ni(CN)4]2–, [NiCl4]2– species, the hybridisation states of the Ni atom are, respectively (At. no. of Ni = 28)
The geometry of Ni (CO)4 and and Ni (P Ph3)2 Cl2 are
Among the following complexes the one which shows zero crystal field stabilization energy (CFSE) is (AIPMT 2014)