Multiple Choice QuestionsThe pair of metal carbonyl complexes that are isoelectronic is
Ni(CO)4 and V(CO)6
[Cr(CO)6] and V(CO)6
[Fe(CO)4]- and Cr(CO)6
[Co(CO)4]- and Ni(CO)4
The compound that inhibits the growth of tumors is:
trans-[Pt(Cl)2(NH3)2]
trans-[Pd(Cl)2(NH3)2]
cis-[Pd(Cl)2(NH3)2]
cis-[Pt(Cl)2(NH3)2]
The calculated spin–only magnetic moments (BM) of the anionic and cationic species of [Fe(H2O)6]2 and [Fe(CN)6], respectively, are :
4.9 and 0
2.84 and 5.92
0 and 5.92
0 and 4.9
A.
4.9 and 0
The compound containing [Fe(H2O)6]2 cation and [Fe(CN)6] anion must be [Fe(H2O)6]2 [Fe(CN)6]. It contains 2[Fe(H2O)6]2+ cation and [Fe(CN)6]4– anion in which Iron is present as Fe2+ ion. In [Fe(H2O)6]2+ since H2O is weak ligand there will be 4 unpaired electrons with 4.9 BM while in [Fe(CN)6]4– all the electrons are paired as the CN– is strong ligand with zero unpaired electrons and zero magnetic moment.
The species that can have a trams-isomer (en=ethane-1,2-diamine,ox=oxalate)
[Cr(en)2(ox)]+
[Pr(en)2Cl2]2+
[Zn(en)Cl2]
[Pt(en)Cl2]
The INCORRECT statement is :
The gemstoe, ruby has Cr3+ ions occupying the octahedral sites of beryl
The spin – only magnetic moments of [Fe(H2O)6]2+ and [Cr(H2O)6]2+ are nearly similar.
The color of [CoCl(NH3)5]2+ is violet as it absorbs the yellow light.
The spin only – magnetic moment of [Ni(NH3)4(H2O2)]2+ is 2.83 BM.
The crystal field stabilization energy (CFSE) of [Fe(H2O)6]Cl2 and K2[NiCl4], respectively are:
-2.4 Δ0 and -1.2Δt
-0.4 Δ0 and -1.2Δt
-0.6 Δ0 and -0.8Δt
-0.4 Δ0 and -0.8Δt
Which of the following has longest C-O bond length? (free C-O bond length in CO is 1.128 A0)
[Co(CO)4]-
[Fe(CO)4]-2
[Mn(CO)6]+
[Mn(CO)6]+
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