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.
A common form of elemental phosphorus is the tetrahedral
P4 molecule, where all four phosphorus atoms are
equivalent:At room temperature phosphorus is a solid. (a) Are there any
lone pairs of electrons in the P4 molecule? (b) How many
P¬P bonds are there in the molecule? (c) Draw a Lewis
structure for a linear P4 molecule that satisfies the octet rule.
Does this molecule have resonance structures? (d) On the
basis of formal charges, which is more stable, the linear molecule
or the tetrahedral molecule?
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
