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
Description : Matching the information given in the three columns of the following table. [Note: Atomic Number of Cr=24,V=23,Pt=78)] Correct combination for `[PtCl_
Last Answer : Matching the information given in the three columns of the following table. [Note: Atomic Number of Cr=24,V=23,Pt=78 ... (IV),(iv),P D. (III),(ii),R
Description : Matching the information given in the three columns of the following table. [Note: Atomic Number of Cr=24,V=23,Pt=78)] Correct combination for `[VCl_(
Last Answer : Matching the information given in the three columns of the following table. [Note: Atomic Number of Cr=24,V=23,Pt=78 ... (III),(ii),R D. (IV),(iv),Q
Description : Matching the information given in the three columns of the following table. [Note: Atomic Number of Cr=24,V=23,Pt=78)] About `(CrCl_(3)(NH_(3))_(3))`
Last Answer : Matching the information given in the three columns of the following table. [Note: Atomic Number of Cr=24,V=23,Pt=78)] ... (IV),(i), R D. (I),(ii),S
Description : Identify the correct trend given below : ( Atomic no : Ti=22, Cr=24 and Mo=42)
Last Answer : Identify the correct trend given below : ( Atomic no : Ti=22, Cr=24 and Mo=42) A. `Delta_(0)of [Cr(H_(2)O)_(6)] ... _(6)]^(+3)gt[Ti(H_(2)O)_(6)]^(2+)`
Description : What is the number of Cr 's in the compound K2 Cr2 O7 ?
Last Answer : Suppose the oxidation number of Cr is x. Now , the oxidation number of K₂Cr₂O7 = 0 (1.2) + (2.x) + (-2) .7 = 0 2x-12 = 0 2x = 12 x = 6 Cr + 6.
Description : Assertion :- Oxidation number of Cr in `Cr(CO)_(6)` is zero. Reason :- Cr is a metal.
Last Answer : Assertion :- Oxidation number of Cr in `Cr(CO)_(6)` is zero. Reason :- Cr is a metal. A. ... Reason is False. D. If both Assertion & Reason are False.
Description : Assertion :- Oxidation number of `Cr` in `CrO_(3)` is `+6`. Reason :- In `CrO_(5)`, four oxygen atoms are involved in peroxide linkage.
Last Answer : Assertion :- Oxidation number of `Cr` in `CrO_(3)` is `+6`. Reason :- In `CrO_(5)`, four ... Reason is False. D. If both Assertion & Reason are False.
Description : In which of the following compounds of Cr, the oxidation number Cr is not `+6` :-
Last Answer : In which of the following compounds of Cr, the oxidation number Cr is not `+6` :- A. `CrO_(3)` B. `CrO_(2)Cl_( ... `Cr_(2)O_(3)` D. `K_(2)Cr_(2)O_(7)`
Description : The oxidation number and co-ordination number of chromium in complex ion `[Cr(C_(2)O_(4))_(2)(H_(2)O)_(2)]^(-)` are
Last Answer : The oxidation number and co-ordination number of chromium in complex ion `[Cr(C_(2)O_(4))_(2)(H_(2)O)_(2)]^(-)` are A. 3,6 B. 2,6 C. 2,8 D. 3,8
Description : Find the sum of number of geometrical isomers for following complexes. `(a) [CoCl_(2)Br_(2)]^(2-) " " (b) [Rh(en)_(3)]^(3+) " " ( c) [Cr(en)_(2)Br_(2)
Last Answer : Find the sum of number of geometrical isomers for following complexes. `(a) [CoCl_(2)Br_(2)]^(2-) " " (b) [Rh(en ... e) [Co(NH_(3))_(3)(NO_(2))_(3)]`
Description : The number of coordination isomers possible for `[Fe(NH_(3))_(6)]^(3+)[Cr(C_(2)O_(4))_(3)]^(3-)` is __________
Last Answer : The number of coordination isomers possible for `[Fe(NH_(3))_(6)]^(3+)[Cr(C_(2)O_(4))_(3)]^(3-)` is __________
Description : Total number of paramagnetic complexes which are inner orbital complexes : `(i) [Cr(NH_(3))_(6)]Cl_(3) " " (ii)[Co(NH_(3))_(6)](NO_(3))_(2)" " (iii)[N
Last Answer : Total number of paramagnetic complexes which are inner orbital complexes : `(i) [Cr(NH_(3))_(6)]Cl_(3) " " (ii)[ ... (4)]" " Na_(4)[Fe(CN)_(5)(NOS)]`
Description : Co-ordination number of Cr in `CrCl_(3^.)5H_(2)O` is six. The volume of 0.1 N `AgNO_(3)` needed to ppt. the chorine in outer sphere in 200 ml of 0.01
Last Answer : Co-ordination number of Cr in `CrCl_(3^.)5H_(2)O` is six. The volume of 0.1 N `AgNO_(3)` ... of 0.01 M solution of he possible complex es is/are:
Description : Consider the formula in image processing RD = 1 - (1/CR) Where CR = n1/n2 CR is called as compression ratio n1 and n2 denotes the number of information carrying units in two datasets that represent ... . (A) Data Compression (B) Data Redundancy (C) Data Relation (D) Data Representation
Last Answer : (B) Data Redundancy
Description : PQRS is a square. A is a point on PS ,B is a point on PQ,C is a point on QR. ABC is a triangle inside square PQRS. Angle abc = 90° . If AP=BQ=CR then prove that angle BAC =45° -Maths 9th
Last Answer : This is the sketch of the question but its hard to answer.
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.
Description : (i) Write down the IUPAC name of the following complex : [Cr(NH3)2CI3(en)]Cl (en = ethylenediamine) (ii) Write the formula for the following complex : Pentaamminenitrito-o-Cobalt (III) -Chemistry
Last Answer : (I) [Cr(NH3)2Cl3(en)]Cl IUPAC name : Diammine dichlorido ethylenediamine chromium (III) chloride. (ii) [Co(NH3)5(ONO)]2+
Description : Write the IUPAC name of the complex [Cr(NH3)4Cl2]+. What type of isomerism does it exhibit? -Chemistry
Last Answer : IUPAC name : Tetraamine dichlorido chromium (III) ion. It exhibits geometrical isomerism.
Description : What is the full form of 'CR' ? -How To ?
Last Answer : The full form of 'CR' is Common Ratio
Last Answer : The full form of 'CR' is Confidential Report
Description : Where to get legal in the CR game James Bond Blood Stone
Last Answer : I was too fast, I don't think I care about PC xbox, ps3 etc
Description : Assertion : Agrobacterium tumefaciens is popular in genetic engineering because this bacterium is associated with the roots of all cereal and pulse cr
Last Answer : Assertion : Agrobacterium tumefaciens is popular in genetic engineering because this bacterium is ... both the assertion and reason are false
Description : Assertion :- Cr belong to 4th period Reason :- Cr atom contain 4 shells.
Last Answer : Assertion :- Cr belong to 4th period Reason :- Cr atom contain 4 shells. A. If both Assertion & ... is False. D. If both Assertion & Reason are false
Description : Assertion :- `Cr^(+2)` is a reducing agent and `Mn^(+3)` is oxidising agent. Reason :- `Mn^(+3)` has `d^(5)` configuration.
Last Answer : Assertion :- `Cr^(+2)` is a reducing agent and `Mn^(+3)` is oxidising agent. Reason :- `Mn ... is False. D. If both Assertion & Reason are False.
Description : `K_(2)Cr_(2)O_(7)` react with hydrazins to form product. The oxidation state of Cr in the product will be :-
Last Answer : `K_(2)Cr_(2)O_(7)` react with hydrazins to form product. The oxidation state of Cr in the product will be :- A. `+4` B. `+3` C. `+5` D. `+2`
Description : The oxidation state of `Cr` in `Cr_(2)O_(7)^(2-)` is
Last Answer : The oxidation state of `Cr` in `Cr_(2)O_(7)^(2-)` is A. `+2` B. `+6` C. `-6` D. `-4`
Description : What is the value of n in the following equation : `Cr(OH)_(4)^(-)+OH^(-) rarr CrO_(4)^(2-)+H_(2)O+n e`?
Last Answer : What is the value of n in the following equation : `Cr(OH)_(4)^(-)+OH^(-) rarr CrO_(4)^(2-)+H_(2)O+n e`? A. 3 B. 6 C. 5 D. 2
Description : Magnetic moments of `V(Z = 23), Cr(Z = 24), Mn (Z = 25)` are x,y,z. HencE:
Last Answer : Magnetic moments of `V(Z = 23), Cr(Z = 24), Mn (Z = 25)` are x,y,z. HencE: A. `x=y=z` B. `xltyltz` C. `xltzlty` D. `zltyltx`
Description : Which isomerism is exhibited by `[Co(NH_(3))_(6)][Cr(CN)_(6)] and [Cr(NH_(3))_(6)][Co(CN)_(6)]`?
Last Answer : Which isomerism is exhibited by `[Co(NH_(3))_(6)][Cr(CN)_(6)] and [Cr(NH_(3))_(6) ... )]`? A. Ionization B. Linkage C. Coordination D. Polymerization.
Description : The IUPAC name of `[Co(NH_(3))_(6)][Cr(C_(2)O_(4))_(3)]` is :
Last Answer : The IUPAC name of `[Co(NH_(3))_(6)][Cr(C_(2)O_(4))_(3)]` is : A. ... (II) tris(oxalato)chromium(III) D. Hexaamminecobalt(III)trioxalatechromium(III)
Description : The IUPAC name of `K_(2)[Cr(CN)_(2)O_(2)(O)_(2)(NH_(3))]` is :
Last Answer : The IUPAC name of `K_(2)[Cr(CN)_(2)O_(2)(O)_(2)( ... Potassium amminedicyanoperoxooxochromate(VI) D. Potassium amminecyanodiperoxodioxochromate(VI)
Description : The oxidation state of Cr in `[Cr(H_(2)O)_(6)]Cl_(3), [Cr(C_(6)H_(6))_(2)], and K_(2)[Cr(CN)_(2)(O)_(2)(O_(2))(NH_(3))]` respectively are :
Last Answer : The oxidation state of Cr in `[Cr(H_(2)O)_(6)]Cl_(3), [Cr(C_(6)H_(6))_(2)], and K_(2)[Cr(CN)_(2)(O)_(2 ... and +4` C. `+3,+4 and +6` D. `+3,+2 and +4`
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-)`
Description : Which of the following facts about the complex `[Cr(NH_(3))_(6)]Cl_(3)` is wrong ?
Last Answer : Which of the following facts about the complex `[Cr(NH_(3))_(6)]Cl_(3)` is wrong ... The complex gives white precipitate with siver nitrate solution.
Description : The oxidation state of `Cr` in `[Cr(NH_(3))_(4)Cl_(2)]^(+)` is:
Last Answer : The oxidation state of `Cr` in `[Cr(NH_(3))_(4)Cl_(2)]^(+)` is:
Description : The volume (in `mL`) of `0.1M Ag NO_(3)` required for complete precipitation of chloride ions present in `30 mL` of `0.01M` solution of `[Cr(H_(2)O)_(
Last Answer : The volume (in `mL`) of `0.1M Ag NO_(3)` required for complete precipitation of chloride ions present ... Cl]Cl_(2)`, as silver chloride is close to:
Description : The ionisation isomer of `[Cr(H_(2)O)_(4) Cl (NO_(2))]Cl`
Last Answer : The ionisation isomer of `[Cr(H_(2)O)_(4) Cl (NO_(2))]Cl` A. `[Cr(H_(2)O)_(4)(O_(2)N)]Cl_(2)` B. `[Cr( ... D. `[Cr(H_(2)O)_(4)Cl_(2)(NO_(2))].H_(2)O`
Description : The spin only magnetic moment value ( in Bohr magneton units ) of `Cr(CO)_(6)` is :
Last Answer : The spin only magnetic moment value ( in Bohr magneton units ) of `Cr(CO)_(6)` is :
Description : What is the charge on the complex `[Cr(C_(2)O_(4))_(2)(H_(2)O)_(2)]` formed by Cr(III) ?
Last Answer : What is the charge on the complex `[Cr(C_(2)O_(4))_(2)(H_(2)O)_(2)]` formed by Cr(III) ? A. `+3` B. `+1` C. `+2` D. `-1`
Description : The complex `[Cr(H_(2)O)_(4)Br_(2)]Cl` gives the test for :
Last Answer : The complex `[Cr(H_(2)O)_(4)Br_(2)]Cl` gives the test for : A. `Br^(-)` B. `Cl^(-)` C. `Cr^(3+)` D. `Br^(-) and Cl^(-)` both
Description : Which of the following complexes can exists as enantiomers ? Draw their structures `(a) cis-[Co(NH_(3))_(4)Br_(2)]^(+) " " (b) cis-[Cr(H_(2)O)_(2)(en)
Last Answer : Which of the following complexes can exists as enantiomers ? Draw their structures `(a) cis-[Co(NH_(3))_(4)Br_(2)]^ ... [Co(NH_(3))_(2)(en)_(2)]^(2+)`
Description : What type of isomers are the following : `(i) [Mn(CO)_(5)SCN] and [Mn(CO)_(5)NCS]` `(ii) [Co(en)_(3)[Cr(CN)_(6)] and [Cr(en)_(3)][Co(CN)_(6)]` `(iii)
Last Answer : What type of isomers are the following : `(i) [Mn(CO)_(5)SCN] and [Mn(CO)_(5)NCS]` `(ii) [Co(en)_(3)[Cr( ... ]Cl and [Co(H_(2)O)Cl_(3)(py)_(2)]H_(2)O`
Description : For the complex `K_(2)[Cr(NO)(NH_(3))(CN)_(4)],mu=1.73 BM`. (i) Write IUPAC name. (ii) What will be structure ? (iii) How many unpaired electrons are
Last Answer : For the complex `K_(2)[Cr(NO)(NH_(3))(CN)_(4)],mu=1.73 BM`. (i) Write IUPAC name. ... the complex. (vi) What will be the hybridisation of the complex.
Description : Arrange the following compounds in order of increasing molar conductivity . `(i) K[Co(NH_(3))_(2)(NO_(2))_(4)]" " (ii) [Cr(NH_(3))_(3)(NO_(2))_(3)]` `
Last Answer : Arrange the following compounds in order of increasing molar conductivity . `(i) K[Co(NH_(3))_(2)(NO_(2))_(4)]" ... )" " (iv) [Cr(NH_(3))_(6)]Cl_(3)`
Description : Calculate the EAN of central atom in the following complexes `(a) [Cr(CO)_(6)]" "(b) [Fe(CN)_(6)]^(4-)" " (c ) [Fe(CO)_(5)] " " (d) [Co(NH_(3))_(6)]^(
Last Answer : Calculate the EAN of central atom in the following complexes `(a) [Cr(CO)_(6)]" "(b) [Fe(CN)_(6)]^(4-)" " (c ... ))_(6)]^(4+)" " (h) [PtCl_(6)]^(2-)`
Description : 1 g of complex `[Cr(H_(2)O)_(5)Cl]Cl_(2).H_(2)O` was passed through a cation exchanger to produce HCl. The acid liberated was diluted to 1 litre. What
Last Answer : 1 g of complex `[Cr(H_(2)O)_(5)Cl]Cl_(2).H_(2)O` was passed through a cation ... molarity of acid solution [Molecular weight of complex=266.5]?
Description : A `C_(6)H_(12)O` compound does not react with `Br_(2)` in `C Cl_(4)`, produces a flammable gas on treatment with `LiAlH_(4)`, and reacts with `H_(2)Cr
Last Answer : A `C_(6)H_(12)O` compound does not react with `Br_(2)` in `C Cl_(4)`, ... B. methoxycyclopentane C. 2-cyclopropyl-2-propanol D. 2-cyclobutylethanol
Description : How do you drain a 2001 Honda CR-V fuel tank?
Last Answer : Need answer