Question
What is meant by chelate effect?

Answer

When a bidentate or polydentate ligand is bonded through two or more donor sites to a metal ion and forms a ring structure then it is said to be chelating ligand. Chelating ligands form more stable complexes than monodentate analogs. This is called chelating effect.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

  1. Urea forms an ideal solution in water. Determine the vapour pressure of anaqueous solution containing 10% by mass of urea at 40°C. (Vapour pressure of water at 40°C = 55.3 mm of Hg)
  2. Why is freezing point depression of 0.1 M sodium chloride solution nearly twice that of 0.1 M glucose solution?
What are enzymes?
Write the reactions involved when D-glucose is treated with the following reagents:
  1. Br2 water
  2. H2N-OH
  3. (CH3CO)2O
Illustrate with examples the limitations of Williamson synthesis for the preparation of certain types of ethers.
Explain nucleophilic addition reaction of aldehydes and ketones with hydrogen cyanide (HCN).
(a) Which is the salt of Mn which is isostructural to $KClO _4$ ?
(b) Explain the structure and magnetic properties of manganese and permanganate ions.
Answer the following questions:

  1. What is meant by chirality of a compound? Give an example.
  2. Which one of the following compounds is more easily hydrolyzed by KOH and why?

CH3CHClCH2CH3 or CH3CH2CH2Cl.

  1. Which one undergoes SN2 substitution reaction faster and why?

Give reasons for the following:
  1. The transition metals generally form coloured compounds.
  2. Eo value for (Mn3+|Mn2+) is highly positive than that for (Cr3+|Cr2+) couple.
  3. The chemistry of actinoids elements is not so smooth as that of the lanthanoids.
To what extent do the electronic configurations decide the stability of oxidation states in the first series of the transition elements? Illustrate your answer with examples.