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.
- Use appropriate tools to draw the Lewis structure of AsF5, ensuring you account for all valence electrons properly.
2. **Determining Bond Angles:**
- Once the Lewis structure is complete, refer to the structure to determine the ideal bonding angles around the central atom.
3. **Select the Correct Answer:**
- Evaluate the possible bonding angles and choose the correct one from the provided options.
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**Answer Choices:**
- A) 90°
- B) 60°
- C) 90° and 120° [**Selected**]
- D) 45°
- E) 120°
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**Explanation:**
Arsenic Pentafluoride (AsF5) has a trigonal bipyramidal molecular geometry. This geometric configuration results in two types of ideal bond angles:
- Equatorial bonds (in the plane parallel to the central atom): **120°**
- Axial bonds (perpendicular to the plane of the equatorial bonds): **90°**
Thus, the correct answer is **C) 90° and 120°**.
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Click the box and start drawing your Lewis structure to complete this chemistry exercise!](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F20214f54-b261-4746-a2af-8e52bbd8e109%2F8a97de90-2017-4b17-a7f0-87afe15d3669%2Fdg6u6jwd_processed.jpeg&w=3840&q=75)
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