Home
Class 12
CHEMISTRY
NiCI(2) in the presence of dimethy1 glyo...

`NiCI_(2)` in the presence of dimethy1 glyoxime` (DMG)` gives a complex which precipitates in the presence of `NH_(4)OH` giving a bright red colour .
(a) Draw its structure and show `H` bonding
(b) Give the oxidation state of Ni and its hybridisation
(c ) Predict whether it is paramagnetic or dimagnetic .

Text Solution

Verified by Experts


Oxidation state of nickel is +2 and hybridisation is `dsp^(2)` .
`mu_(s)=sqrt(n(n+2)) B.M.`
`n=0`
`:. mu_(s)=0`
Promotional Banner

Topper's Solved these Questions

  • COORDINATION COMPOUNDS

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (Section-J Aakash Challenger Questions )|10 Videos
  • COORDINATION COMPOUNDS

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (Section-H Multiple True-False Type Questions )|5 Videos
  • CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (Section - J Aakash Challengers Questions)|6 Videos
  • ELECTROCHEMISTRY

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (SECTION - J) (Aakash Challengers Questions)|10 Videos

Similar Questions

Explore conceptually related problems

When diemethyl glyoxime is added to the aqueous solution of nickel (II) chloride in presence of dilute ammonia solution, a bright red coloured precipitate is obtained . (a) Draw the structure of bright red substance . (b) Write the oxidation state of nickel in the substance and hybridisation. (c ) State whether the substance is paramagnetic or diamagnetic.

Nickel chloride, when treated with dimethyl gyloxime in presence of ammonium hydroxide, a bright red precipitate is obtained. Answer the following: (a) Draw the structure of the complex showing H-bonds (b) Give oxidation state of nickel and its hybridization (c) Predict the magnetic behaviour of the complex

Dimethyl glyoxime gives a red precipitate with Ni^(2+) , which is used for its detection. To get this precipitate readily the best pH range is

(i) An organic compound A with molecular formula C_(7)H_(8) on oxidation by chromyl chloride in the presence of C Cl_(4) gives a compound B which gives positive Tollen's test. The compound B on treatment with NaOH followed by acid hydrolysis gives two product C and D. C on oxidation gives B which on further oxidation gives D. the compound D on distillation with sodalime gives a hydrocarbon E. Below 60^(@)C , concentrated nitric acid reacts with E in the presence of concentrated sulphuric acid forming a compound F. identify the compounds A,B,C,D,E and F. (ii) Give chemical test to distinguish : Formaldehyde and acetaldehyde.

A metal complex having composition Cr(NH_(3))_(4)CI_(2)Br has been isolated in two forms A and B. The form A reacts with AgNO_(3) to give a white precipitate readily soluble in dilute aqueous ammonia whereas B gives a pale yellow precipitate soluble in concentrated ammonia. (i) Write the formulae of isomers A and B. (ii) State the hybridisation of chromium in each of them. (iii) Calculate the magnetic moment (spin only) of the isomer A.

(a) Draw Lewis structures for : (i) Ethanol (C_2 H_5 O H) (ii) BrNO (iii) HOCN (b) Give an isomeric structure for NH_2 OH and explain which structure is more stable.

A non-metal A which is the largest constituent of air, when heated with H2 in 1 : 3 ratio in the presence of catalyst (Fe) gives a gas B. 0n heating with O_(2) it gives an oxide C. If this oxide is passed into water in the presence of air, it gives an acid D which acts as a strong oxidising agent. (a) Identify A, B, C and D. (b) To which group of the periodic table does this non-metal belongs?

An aliphatic unsaturated hydrocarbon (A) when treated with HgSO//H_2SO_4 yields a compound (B) having molecular formula C_(3)H_(6)O . (B) on oxidation with concentrated HNO_3 gives two compounds (C) and (D). Compound (C) when treated with PCl_5 gives compound (E). (E) when reacts with ethanol gives a sweet-smelling liquid (F). Compound (F) is also formed when (C) reacts with ethanol in the presence of concentrated H_2SO_4 . (i) Identify the compound A, B, C, D, E and F. (ii) Give the chemical equation for the reaction of (C) with chlorine in the presence of red phosphorus and name the reaction.