How are the molecules in the following pair related? H3C-Cl CH₂ CH₂ CI Select one: O A. III O B. II O C. I H3C CH I CI I. They are isomers. II. They are resonance structures. III. Neither of the choices is correct. CH3
Formal Charges
Formal charges have an important role in organic chemistry since this concept helps us to know whether an atom in a molecule is neutral/bears a positive or negative charge. Even if some molecules are neutral, the atoms within that molecule need not be neutral atoms.
Polarity Of Water
In simple chemical terms, polarity refers to the separation of charges in a chemical species leading into formation of two polar ends which are positively charged end and negatively charged end. Polarity in any molecule occurs due to the differences in the electronegativities of the bonded atoms. Water, as we all know has two hydrogen atoms bonded to an oxygen atom. As oxygen is more electronegative than hydrogen thus, there exists polarity in the bonds which is why water is known as a polar solvent.
Valence Bond Theory Vbt
Valence bond theory (VBT) in simple terms explains how individual atomic orbitals with an unpaired electron each, come close to each other and overlap to form a molecular orbital giving a covalent bond. It gives a quantum mechanical approach to the formation of covalent bonds with the help of wavefunctions using attractive and repulsive energies when two atoms are brought from infinity to their internuclear distance.
Isomers:
compounds having the same molecular formula but having different arrangement of atoms in space. The phenomena is known as isomerisation.
Resonance Structure:
these are the set of two or more Lewis structures that collectively represent the electronic bonding of a single polyatomic species. The structure describe the delocalisation of electrons that we cannot understand by single Lewis structure.
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