BeClz BF3 SnCh CH4 NH₁ HO PCIs SF4 BrF3 XeF₂ SF6 IFs 1. Use the Lewis Structures from your prelab to complete the table below. Bonds to Central Atom XeF4 3 2 4 2 4 3 2 S 3 d 4 Lone Pairs on Central Atom O O 2 O O 1 2 O O Bond Electron-Pair Molecular Geometry Geometry Angle(s) F 9-Be-C 161 B * F d It Sn CT CI-P IF :0-# T a It ACI af CI LINEAR 180 TRICONAL 20 Plowar BENT 2120 TETRAHED 109 TRIGONAL LIO BENT L120 TRIGONAL 100 bipyramid Hybridization of Central Atom SP Sp2 Sp2 Sp3 14 #sp3 Sp3 sp³D Net Dipole? Yes or No NO 150 166 NO YES
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.
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