The correct statement (s) regarding the binary transition metal carbonyl compounds is (are) (Atomic numbers: Fe = 26, Ni = 28)

The correct statement (s) regarding the binary transition metal carbonyl compounds is (are) (Atomic numbers: Fe = 26, Ni = 28)
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The correct statement (s) regarding the binary transition metal carbonyl compounds is (are) (Atomic ... the oxidation state of the metal is increased
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Description : Which one of the following has a square planar geometry? `(Co=27, Ni=28, Fe=26, Pt=78)`

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Description : EAN of a metal carbonyl `M(CO)_(x)` is 36. If atomic number of metal M is 26, what is the value of x?

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Compare the following complexes with respect to their shape, magnetic behaviour and the hybrid orbitals involved : (i) [CoF4]2- (ii) [Cr(H2O)2(C2O4)2]– (iii) [Ni(CO)4] (Atomic number : Co = 27, Cr = 24, Ni = 28) -Chemistry

Description : Compare the following complexes with respect to their shape, magnetic behaviour and the hybrid orbitals involved : (i) [CoF4]2- (ii) [Cr(H2O)2(C2O4)2]– (iii) [Ni(CO)4] (Atomic number : Co = 27, Cr = 24, Ni = 28) -Chemistry

Last Answer : (i) [COF4]2_ : Tetrafluorido cobalt (III) ion Coordination number = 4 Shape = Tetrahedral Hybridisation = sp3 Important Questions for Class 12 Chemistry Chapter 9 Coordination Compounds Class 12 Important Questions 7

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Description : In which of the following compounds, the oxidation number of the started transition metal is zero.

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Description : In which of the following compounds, the oxidation number of the started transition metal is zero.

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Description : Which of the following metals is used in Space Crafts to withstand high temperatures? (1) Fe (2) Ti (3) Ni (4) Pb

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Low pressure Zeigler process for the manufacture of polythene uses a catalyst which is (A) Ni (B) V2O5 (C) Fe (D) Aluminium triethyl combined with titanium tetrachloride

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Description : The deficiencies of micronutrients, not only affect growth of plants but also vital functions such as photosynthetic and mitochondrial electron flow. Among the list given below, which group of three elements shall affect most, both ... , Mo (b) Ca, K, Na (c) Mn, Co, Ca (d) Cu, Mn, Fe

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Consider the production of ammonia from methene and air as raw materials. The catalysts used are: (i) __________ for steam reforming of methane and (ii) __________ for ammonia synthesis. (A) (i) - Ni/Al2O3 ; (ii) - Cu - ZnO/Al2O3 (B) (i) - Fe/Al2O3 ; (ii) - Cu - ZnO/Al2O3 (C) (i) - Ni/Al2O3 ; (ii) - Fe/Al2O3 (D) (i) - Fe/Al2O3 ; (ii) - Ni/Al2O3

Description : Consider the production of ammonia from methene and air as raw materials. The catalysts used are: (i) __________ for steam reforming of methane and (ii) __________ for ammonia synthesis. (A) (i) - Ni/Al2O3 ; (ii) - Cu - ZnO/ ... (i) - Ni/Al2O3 ; (ii) - Fe/Al2O3 (D) (i) - Fe/Al2O3 ; (ii) - Ni/Al2O3

Last Answer : (C) (i) - Ni/Al2O3 ; (ii) - Fe/Al2O3

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Description : Transformer cores are normally made from (A) Soft ferrites (B) High purity iron (C) Grain oriented Fe-Si alloy (D) Al-Ni-Co alloy

Last Answer : (C) Grain oriented Fe-Si alloy

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Description : Maraging steels derive their strength from the following mechanism: (A) A fine, highly dislocated and strong martensite (B) Fine dispersions of inter-metallic of Fe, Ni, Ti etc (C) Fine ... alloy carbides in a ferrite matrix (D) Fine dispersions of Fe3 C nucleated on dislocations in austenite

Last Answer : Option A

Which of the following metals is used in Space Crafts to withstand high temperatures ? (1) Fe (2) Ti (3) Ni (4) Pb

Description : Which of the following metals is used in Space Crafts to withstand high temperatures ? (1) Fe (2) Ti (3) Ni (4) Pb

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The metal carbonyl which is paramagnetic is

Description : The metal carbonyl which is paramagnetic is

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The figure represents the synergic bonding interaction in metal carbonyl complex. On the basis of the explain the following: (i) Strength of Metal-lig

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For the complex [Fe(en)2Cl2], Cl, (en = ethylene diamine), identify (i) the oxidation number of iron, (ii) the hybrid orbitals and the shape of the complex, (iii) the magnetic behaviour of the complex, (iv) the number of geometrical isomers, (v) whether there is an optical isomer also, and (vi) name of the complex. (At. no. of Fe = 26) \ -Chemistry

Description : For the complex [Fe(en)2Cl2], Cl, (en = ethylene diamine), identify (i) the oxidation number of iron, (ii) the hybrid orbitals and the shape of the complex, (iii) the magnetic behaviour of the complex, (iv) ... an optical isomer also, and (vi) name of the complex. (At. no. of Fe = 26) \ -Chemistry

Last Answer : i) [Fe(en)2Cl2] Cl or x + 0 + 2 (-1) + (-1) = 0 x + (- 3) = 0 or x = + 3 ∴ Oxidation number of iron, x = + 3 (ii) The complex has two bidentate ligands and two ... )2Cl2] Cl, only cis-isomer shows optical isomerism. (vi) Name of complex: Dichloridobis (ethane-1, 2- diamine) Iron (III) chloride

[Fe(H2O)6]3+ is strongly paramagnetic whereas [Fe(CN)6]3- is weakly paramagnetic. Explain. (At. no. Fe = 26) -Chemistry

Description : [Fe(H2O)6]3+ is strongly paramagnetic whereas [Fe(CN)6]3- is weakly paramagnetic. Explain. (At. no. Fe = 26) -Chemistry

Last Answer : In both the cases, Fe is in oxidation state +3. Outer electronic configuration of Fe+3 is : In the presence of CN-, the 3d electrons pair up leaving only one unpaired electron. The ... sp3d2 forming an outer orbital complex. As it contains five unpaired electrons so it is strongly paramagnetic. .

The pair having the same magnetic moment is [at. No. `Cr = 24, Mn = 25, Fe = 26 " and " Co = 27]`

Description : The pair having the same magnetic moment is [at. No. `Cr = 24, Mn = 25, Fe = 26 " and " Co = 27]`

Last Answer : The pair having the same magnetic moment is [at. No. `Cr = 24, Mn = 25, Fe = 26 " and " Co = 27]` A. `[Cr( ... (H_(2)O)_(6)]^(2+) and [CoCl_(4)]^(2-)`

Calculate critical damping coefficient in N/m/s from the following data: mass = 100Kg ω = 40rad/s a) 25,132 b) 26,132 c) 27,132 d) 28,132

Description : Calculate critical damping coefficient in N/m/s from the following data: mass = 100Kg ω = 40rad/s a) 25,132 b) 26,132 c) 27,132 d) 28,132

Last Answer : a) 25,132

Mark the correct option a) SB 26 denotes preliminary receipt b) SB 28 denotes receipts for depositors passbook c) SB 58 denotes long book d) All the above

Description : Mark the correct option a) SB 26 denotes preliminary receipt b) SB 28 denotes receipts for depositors passbook c) SB 58 denotes long book d) All the above

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Compare the following complexes’ with respect to structural shapes of units, magnetic behaviour and hybrid orbitals involved in units : (i) [Ni(CN)4]2- (ii) [NiCl4]2- (iii) [CoF6]3- [At. Nos. : Ni = 28; Co = 27] -Chemistry

Description : Compare the following complexes’ with respect to structural shapes of units, magnetic behaviour and hybrid orbitals involved in units : (i) [Ni(CN)4]2- (ii) [NiCl4]2- (iii) [CoF6]3- [At. Nos. : Ni = 28; Co = 27] -Chemistry

Last Answer : (i) [Ni(CN)4]2- Shape : Octahedral outer orbital complex Hybridisation : sp3d2 Magnetic behaviour : Paramagnetic (4 unpaired electrons)

Compare the following complexes with respect to structural shapes of units, magnetic behaviour and hybrid orbitals involved in units : [Co(NH3)6]+3, [Cr(NH3)6]3+, Ni(CO)4 (At. nos. : Co = 27, Cr = 24, Ni = 28) -Chemistry

Description : Compare the following complexes with respect to structural shapes of units, magnetic behaviour and hybrid orbitals involved in units : [Co(NH3)6]+3, [Cr(NH3)6]3+, Ni(CO)4 (At. nos. : Co = 27, Cr = 24, Ni = 28) -Chemistry

Last Answer : (i) [Co(NH3)6]+3 → Octahedral shape, d2sp3 hybridisation, diamagnetic Formation of [Co(NH2)6]+3 → oxidation state of Co is +3.

Explain why [Co(NH3)6]3+ is an inner orbital complex whereas [Ni(NH3)6]2+ is an outer orbital complex. (At. no. Co = 27, Ni = 28) -Chemistry

Description : Explain why [Co(NH3)6]3+ is an inner orbital complex whereas [Ni(NH3)6]2+ is an outer orbital complex. (At. no. Co = 27, Ni = 28) -Chemistry

Last Answer : In [Co(NH3)6]3+, the d-electrons of Co3+ ([Ar]3d6 45°) get paired leaving behind two empty d-orbital and undergo d2sp3 hybridization and hence inner orbital complex, while in [Ni(NH3)6]2+ ... of Ni2+([Ar]3d8 45°) do not pair up and use outer 4d subshell hence outer orbital complex.

Describe the shape and magnetic behaviour of following complexes : (i) [CO(NH3)6]3+ (ii) [Ni(CN)4]2- (At. No. Co = 27, Ni = 28) -Chemistry

Description : Describe the shape and magnetic behaviour of following complexes : (i) [CO(NH3)6]3+ (ii) [Ni(CN)4]2- (At. No. Co = 27, Ni = 28) -Chemistry

Last Answer : (i) [CO(NH3)6]3+ : Orbitals of CO3+ ion : Hybridization : d2sp3 Shape : Octahedral Magnetic behaviour : Diamagnetic (absence of unpaired electrons) (ii) [Ni(CN)4]2-

A hydrogen like atom (atomic number Z) is in a higher excited state of quantum number n. The excited atom can make a transition to the first excited s

Description : A hydrogen like atom (atomic number Z) is in a higher excited state of quantum number n. The excited atom can make a transition to the first excited s

Last Answer : A hydrogen like atom (atomic number Z) is in a higher excited state of quantum number n. The excited ... . (lonization energy of H-atom = 13.6 eV)

In Manchester encoding, does a low-to-high light level transition occurring in the middle of the bit duration represent a binary 1 or a binary 0?

Description : In Manchester encoding, does a low-to-high light level transition occurring in the middle of the bit duration represent a binary 1 or a binary 0?

Last Answer : Binary 0.

`{:(,"Compounds",,"O.N."),((A),KMn^(**)O_(4),(1),+4),((B),Ni^(**)(CO)_(4),(2),+7),((C),[Pt^(**)(NH_(3))Cl_(2)]Cl_(2),(3),0),((D),Na_(2)O_(2)^(**),(4),

Description : `{:(,"Compounds",,"O.N."),((A),KMn^(**)O_(4),(1),+4),((B),Ni^(**)(CO)_(4),(2),+7),((C),[Pt^(**)(NH_(3))Cl_(2)]Cl_(2),(3),0),((D),Na_(2)O_(2)^(**),(4),

Last Answer : `{:(,"Compounds",,"O.N."),((A),KMn^(**)O_(4),(1),+4),((B),Ni^(**)(CO)_(4),(2),+7),((C),[Pt^(**)(NH_(3) ... ),(2,3,1,4):}` D. `{:(A,B,C,D),(4,1,2,3):}`

Which statement about the carbonyl group of ketones and aldehydes is true? I. It can attract nucleophiles. II. It can attract electrophiles. III. It tends to undergo addition reactions. IV. It tends to undergo substitution reactions. (a) I and III (b) II and IV (c) I, II, and III (d) I, III, and IV

Description : Which statement about the carbonyl group of ketones and aldehydes is true? I. It can attract nucleophiles. II. It can attract electrophiles. III. It tends to undergo addition reactions. IV. It tends to undergo substitution reactions. (a) I and III (b) II and IV (c) I, II, and III (d) I, III, and IV

Last Answer : I, II, and III