An example of a sigma bonded organometallic compound is
(a) ruthenocene (b) Grignard's reagent
(c) ferrocene (d) cobaltocene
The correct order of the stoichiometrics of AgCl formed when AgNO3 in excess is treated with the complexes:- CoCl3.6NH3, CoCl3.5NH3, CoCl3.4NH3 respectively is
(a) 1 AgCl, 3 AgCl, 2 AgCl
(b) 3 AgCl, 1 AgCl, 2 AgCl
(c) 3 AgCl, 2 AgCl, 1 AgCl
(d) 2 AgCl, 3AgCl, 1 AgCl
Correct increasing order for the wavelengths of absorption in the visible region for the complexes of CO3+ is
(a) [CO(en)3]3+, [CO(NH3)63+ CO(H2O)6]3+
(b) [CO(H2O)6]3+, [CO(en)3]3+. [CO(NH3)6]3+
(c) [CO(H2O)6]3+, (CO(NH3)6]3+ , [CO(en)3]3+
(d) [CO(NH2)8]3+, [CO(en)3]3+, [CO(H2O)6]3+
Pick out the correct statement with respect to [Mn(CN)6]3-
(a) it is sp3d2 hybridised and octahedral
(b) It is sp3d2 hybridised and tetrahedral
(c) It is d2sp3 hybridised and octahedral
(d) It is dsp2 hybridised and square planar
Jahn-Teller effect is not observed in high spin complexes of
Which of the following has longest C-O bond length? (Free C-O bond length in CO is 1.128 Å.)
Which of the following statements is false?
(a) Ca2+ ions are important in blood clotting
(b) Ca2+ ions are not important in maintaining the regular beating of the heart
(c) Mg2+ ions are important in the green parts of plants
(d) Mg2+ ions form a complex with ATP
Cobalt (III) chloride forms several octahedral complexes with ammonia. Which of the following will not give test for chloride ions with silver nitrate at 25°C?
(b) CoCl3 .NH3
(c) CoCI3 .5NH3
Which of these statements about [CO(CN)6]3- is true?
(a) [CO(CN)6]3- has no unpaired electrons and will be in a low-spin configuration.
(b) [CO(CN)6]3- has four unpaired electrons and will be in a low-spin configuration.
(c) [CO(CN)6]3- has four unpaired electrons and will be in a high-spin configuration.
(d) [CO(CN)6]3- has no unpaired electrons and will be in a high-spin configuration.