Question
Explain Valence Bond theory in Coordination compound.
✓
Answer
→ According to this theory, the metal atom or ion under the influence of ligands can use its (n-1)d, ns, np or ns, np, nd orbitals for hybridization to yield a set of equivalent orbitals of definite geometry such as octahedral, tetrahedral, square planar
→ These hybridised orbitals are allowed to overlap with ligand orbitals that can donate electron pairs for bonding.
Number of Orbitals and Types of Hybridizations
→ It is usually possible to predict the geometry of a complex from the knowledge of its magnetic behaviour on the basis of the valence bond theory.
→ These hybridised orbitals are allowed to overlap with ligand orbitals that can donate electron pairs for bonding.
Number of Orbitals and Types of Hybridizations
| Coordination number | Type of Hybridisation | Distribution of hybrid orbitals in space |
| 4 | $sp ^3$ | Tetrahedral |
| 4 | $dsp ^2$ | Square planar |
| 5 | $sp ^3 d$ | Trigonal bipyramidal |
| 6 | $sp ^3 d^2$ | Octahedral |
| 6 | $d ^2 sp ^3$ | Octahedral |
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Describe the physical properties of benzenediazonium salts.
The chemistry of corrosion of iron is essentially an electrochemical phenomenon. Explain the reactions occurring during the corrosion of iron in the atmosphere.
Name the members of the lanthanoid series which exhibit $+4$ oxidation states and those which exhibit $+2$ oxidation states. Try to correlate this type of behaviour with the electronic configurations of these elements.
→Give plausible explanation of :
Why do primary amines have higher boiling point than tertiary amines?
Why do primary amines have higher boiling point than tertiary amines?
Classify carbohydrates.
Write structures of compounds A and B in each of the following reactions:
Write the reactions of Williamson synthesis of 2-ethoxy-3-methylpentane starting from ethanol and 3-methylpentan-2-ol.
Although phenoxide ion has more number of resonating structures than carboxylate ion, carboxylic acid is a stronger acid than phenol. Why?
Answer the following:
$(a)\ a.$ Write the mathematical relation between rate constant and half-life of a first order reaction.
$b.$ What is collision frequency?
$(b)$ If the rate equation is given below:
Rate $= k[A]^2[B]$
then what will be the unit of its rate and rate constant?
→$(a)\ a.$ Write the mathematical relation between rate constant and half-life of a first order reaction.
$b.$ What is collision frequency?
$(b)$ If the rate equation is given below:
Rate $= k[A]^2[B]$
then what will be the unit of its rate and rate constant?
Give examples of zero order reaction .