4. Draw the BEST Lewis structure (with formal charges) of the indicated chemical species. A. HBrO₂ B. BrO3 E. CIO₂ C. Se042- H. 103 D. HPO42- 1. HSeO4 F. HBrO3 G. BrO₂ HIO₂ : IBv (1)(7)=7 30 (3) (4) 18 11 Charge 26e4 20€'s 0: FC-6-[(3) + 1/2 (6)] 10 (C-7-[(4) ¹₂ (6) F K. H₂SO4 00 ↑ : 0:6 =Br- 11@ :0:
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.
![The image contains a chemistry problem involving the drawing of Lewis structures for various chemical species. The problem is stated as follows:
**4. Draw the BEST Lewis structure (with formal charges) of the indicated chemical species.**
The chemical species listed are:
- A. HBrO₂
- B. BrO₃⁻
- C. SeO₄²⁻
- D. HPO₄²⁻
- E. ClO₂⁻
- F. HBrO₃
- G. BrO₂⁻
- H. IO₃⁻
- I. HSeO₄⁻
There are several Lewis structures drawn with formal charges indicated, though the exact species each structure corresponds to is not labeled in the image. These structures include:
- Lewis structures with central atoms bonded to oxygen atoms.
- Use of double bonds and lone pairs to satisfy the octet rule.
- Calculation of formal charges.
For example, for species B (BrO₃⁻):
- The central bromine (Br) atom is connected to three oxygen (O) atoms.
- One oxygen has a double bond with Br, while the other two have single bonds and carry negative charges.
This image serves as a practice problem for students learning to draw Lewis structures, balance charges, and understand molecular geometry and electron distribution.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F8575c4c7-8bcb-4e2c-89de-122585d548b3%2F97fc2dad-2cff-4b19-a088-9948082513ee%2Fg0zwia_processed.jpeg&w=3840&q=75)
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