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Q. The Latimer diagram of oxygen is given below. The value of x is__________V. (Up to two decimal places) Ans: 1.22 to 1.24
READ MORE +Q. The Latimer diagram of oxygen is given below. The value of x is__________V. (Up to two decimal places) Ans: 1.22 to 1.24
READ MORE +Q. The reaction of equimolar quantities of Fe(CO)5 and OH– gives a complex species X which on further reaction with MnO2 gives species Y. X and Y, respectively, are (A) – and Fe2(CO)9 (B) 2– and Mn2(CO)10 (C) – and Fe2O3 (D) – and Fe3(CO)12 Ans: - and Fe3(CO)12
READ MORE +Q. The reaction of PCl3 with PhLi in 1:3 molar ratio yields X as one of the products, which on further treatment with CH3I gives Y. The reaction of Y with n-BuLi gives product Z. The products X, Y and Z, respectively, are (A) Cl, and Ph2P(n-Bu) (B) PPh3, (CH3) and Ph2P(n-Bu)3 (C) PPh3, I ...
READ MORE +Q. For an inverse spinel, AB2O4, the A and B, respectively, can be (A) Ni(II) and Ga(III) (B) Zn(II) and Fe(III) (C) Fe(II) and Cr(III) (D) Mn(II) and Mn(III) Ans: Ni(II) and Ga(III)
READ MORE +Q. Second-order rate constant for the reaction between n+ (n = 3 for X = NH3 and H2O; n = 2 for X = Cl–) and 2+ at room temperature varies with the X as (A) NH3 > H2O > Cl– (B) Cl– > H2O > NH3 (C) NH3 > Cl– > H2O (D) H2O > NH3 > Cl– Ans: Cl- > H2O > ...
READ MORE +Q. Generally, the coordination number and the nature of the electronic absorption band (f → f transition) of lanthanide(III) ion in their complexes are, respectively, (A) greater than 6 and sharp (B) 6 and broad (C) less than 6 and sharp ...
READ MORE +Q. Spectroscopic ground state term symbols of cobalt ions in 2+ and 2–, respectively, are (A) 2T1g and ...
READ MORE +Q. The O2 coordinated to metal ion centres in oxy-myoglobin and oxy-hemocyanin exists, respectively, as (A) superoxide and peroxide (B) superoxide and superoxide (C) peroxide and peroxide (D) superoxide and oxygen Ans: superoxide and peroxide
READ MORE +Q. The symmetry label of valence p orbitals of a metal ion in an octahedral ligand field is (A) t1g (B) t1u (C) eg + a1g (D) t2g Ans: t1u
READ MORE +Q. The lowest energy d → d transition of the complexes follow the order (A) 3+ < 3+ < 3– (B) 3– < 3+ < 3+ (C) 3– < 3+ < 3+ (D) 3+ < 3– < 3+ Ans: 3+ < 3+ < 3–
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