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.
![**BeF2 Molecular Geometry**
### Understanding the Geometry of BeF₂
#### What is the F−Be−F bond angle?
- 120°
- 109.5°
- 180°
- < 109.5°
#### The Be−F bond in BeF₂ is
[Dropdown menu]
#### The molecule BeF₂ is
[Dropdown menu]
### Explanation of Diagrams
This section contains a multiple-choice question and dropdown menus related to the molecular geometry and bond characteristics of the beryllium fluoride (BeF₂) molecule.
1. **Question about the F-Be-F Bond Angle**
- Four options are provided: 120°, 109.5°, 180°, and < 109.5°. This question aims to test the understanding of the molecular geometry of BeF₂, which is known to have a linear structure.
2. **Be−F Bond Type Selection**
- A dropdown menu is presented where users are expected to select the correct type of bond between Beryllium (Be) and Fluorine (F) in BeF₂.
3. **Molecule Shape Classification**
- Another dropdown menu allows users to choose the correct molecular geometry for BeF₂.
By interacting with this educational resource, students can reinforce their knowledge about molecular bond angles, types of bonds in a molecule, and molecular geometry.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F7d591113-c73d-4bf8-a1b7-9966513ce440%2Fc344dd83-6af3-4920-ac9a-91414102142c%2F5d00lqg_processed.png&w=3840&q=75)
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