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Valence Bond Theory Diagram chemistry In chemistry the valence or valency of an element is a measure of its combining power with other atoms when it forms chemical compounds or molecules The concept of valence developed in the second half of the 19th century and helped successfully explain the molecular structure of inorganic and organic compounds The quest for the underlying causes of valence Valence Bond Theory Diagram covalent bond also called a molecular bond is a chemical bond that involves the sharing of electron pairs between atoms These electron pairs are known as shared pairs or bonding pairs and the stable balance of attractive and repulsive forces between atoms when they share electrons is known as covalent bonding better source needed For mpcfaculty mark bishop molecular orbital theory htmMolecular Orbital Theory The goal of molecular orbital theory is to describe molecules in a similar way to how we describe atoms that is in terms of orbitals orbital diagram...