Please count total number of valence electrons, have lewis structures, resonance structures where applicable, and name the molecular geometry for each central atom.
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.
![**Lewis Structures and Molecular Shapes**
Draw the Lewis structures for each of the following ions and molecules. Indicate the shape by description or sketch. The relative arrangement of atoms is shown in the box.
1. **Ammonia (NH₃):**
- **Arrangement:**
- A nitrogen atom (N) is bonded to three hydrogen atoms (H), forming a trigonal pyramidal shape.
2. **Hydrazine (N₂H₄):**
- **Arrangement:**
- Two nitrogen atoms (N) are bonded to each other, with each nitrogen also bonded to two hydrogen atoms (H), forming an overall staggered structure.
3. **Methyl Chloride (CH₃Cl):**
- **Arrangement:**
- A carbon atom (C) is bonded to three hydrogen atoms (H) and one chlorine atom (Cl), forming a tetrahedral shape.
4. **Acetic Acid (CH₃COOH):**
- **Arrangement:**
- The structure includes a carbon (C) bonded to three hydrogen atoms (H), another carbon bonded to an oxygen atom (O) via a double bond, and a hydroxyl group (OH), forming a planar arrangement around the carboxyl group.
5. **Carbon Dioxide (CO₂):**
- **Arrangement:**
- A linear configuration with a carbon atom (C) double-bonded to two oxygen atoms (O).
6. **Hydrogen Cyanide (HCN):**
- **Arrangement:**
- A carbon atom (C) is triple-bonded to a nitrogen atom (N) and single-bonded to a hydrogen atom (H), forming a linear shape.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc247148b-ac88-4d23-ab16-d846cf9acaa7%2Fed5dc70b-5922-48ef-9e3f-a6fcda2f6a83%2Fyg9wt49_processed.jpeg&w=3840&q=75)
![](/static/compass_v2/shared-icons/check-mark.png)
Trending now
This is a popular solution!
Step by step
Solved in 4 steps with 4 images
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)
![Chemistry](https://www.bartleby.com/isbn_cover_images/9781305957404/9781305957404_smallCoverImage.gif)
![Chemistry](https://www.bartleby.com/isbn_cover_images/9781259911156/9781259911156_smallCoverImage.gif)
![Principles of Instrumental Analysis](https://www.bartleby.com/isbn_cover_images/9781305577213/9781305577213_smallCoverImage.gif)
![Chemistry](https://www.bartleby.com/isbn_cover_images/9781305957404/9781305957404_smallCoverImage.gif)
![Chemistry](https://www.bartleby.com/isbn_cover_images/9781259911156/9781259911156_smallCoverImage.gif)
![Principles of Instrumental Analysis](https://www.bartleby.com/isbn_cover_images/9781305577213/9781305577213_smallCoverImage.gif)
![Organic Chemistry](https://www.bartleby.com/isbn_cover_images/9780078021558/9780078021558_smallCoverImage.gif)
![Chemistry: Principles and Reactions](https://www.bartleby.com/isbn_cover_images/9781305079373/9781305079373_smallCoverImage.gif)
![Elementary Principles of Chemical Processes, Bind…](https://www.bartleby.com/isbn_cover_images/9781118431221/9781118431221_smallCoverImage.gif)