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Bonding In Coordination Compounds
Chapter Name : Coordination Compounds
Sub Topic Code : 102_12_09_05_01
Topic Name : Bonding In Coordination Compounds
Sub Topic Name : Valence Bond Theory
Introduction

Coordination complex or metal complex, consists of an atom or ion (usually metallic), and a surrounding array of bound molecules or anions, that are in turn known as ligands or complexing agents.

Pre-Requisites:

Coordination Compounds

Activity:

Nickel tetracarbonyl.

Real Life Question:

What is Valence bond (VB) theory?

Key Words / FlashCards
Key Words Definitions (pref. in our own words)
Valence bond (VB) theory Valence bond (VB) theory is one of two basic theories, along with molecular orbital (MO) theory, that were developed to use the methods of quantum mechanics to explain chemical bonding.
Learning aids / Gadgets
Gadgets How it can be used
Ligand field theory Ligand field theory (LFT) describes the bonding, orbital arrangement, and other characteristics of coordination complexes.
Real life uses :

Study of organometals.

Places to visit :

Pharmacy.

Practical examples around us
Examples Explainations
Nickel tetracarbonyl It is an intermediate in the Mond process for the purification of nickel and a reagent in organometallic chemistry.
What you learn in Theory:

Valence bond (VB) theory is one of two basic theories, along with molecular orbital (MO) theory, that were developed to use the methods of quantum mechanics to explain chemical bonding.

What you learn in Practice:

Valence bond theory now complements molecular orbital (MO) theory, which does not adhere to the VB idea that electron pairs are localized between two specific atoms in a molecule but that they are distributed in sets of molecular orbitals which can extend over the entire molecule.

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