What are the VSEPR shapes (molecular geometries) associated with the indicated atoms I, II, III, respectively? II II |= linear, Il linear, II trigonal planar |= linear, II = trigonal planar, III = tetrahedral | = tetrahedral, II = linear, III trigonal pyramidal I= tetrahedral, I| = linear, III = trigonal planar A. В. C. %3D %3D D. OD O A O B the
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.
![### Understanding VSEPR Shapes (Molecular Geometries)
The VSEPR (Valence Shell Electron Pair Repulsion) theory is a model used to predict the geometry of individual molecules based on the number of electron pairs surrounding their central atoms.
In this exercise, we aim to identify the shapes associated with specific indicated atoms I, II, and III within a given molecule, using the VSEPR model.
**Question:**
What are the VSEPR shapes (molecular geometries) associated with the indicated atoms I, II, III, respectively?
**Provided Diagram:**
The diagram depicts a molecule with positions labeled I, II, and III.
**Possible Options:**
A. I = linear, II = linear, III = trigonal planar
B. I = linear, II = trigonal planar, III = tetrahedral
C. I = tetrahedral, II = linear, III = trigonal pyramidal
D. I = tetrahedral, II = linear, III = trigonal planar
**Answer Choices:**
- ( ) D
- ( ) A
- ( ) B
- ( ) C
**Explanation of Molecular Geometries:**
- **Linear:** Atoms are arranged in a straight line (180° bond angles).
- **Trigonal Planar:** Three atoms are positioned around a central atom forming an equilateral triangle (120° bond angles).
- **Tetrahedral:** Four atoms are symmetrically arranged around a central atom (109.5° bond angles).
- **Trigonal Pyramidal:** Three atoms are positioned around a central atom with a lone pair above the central atom (approximately 107° bond angles).
Select the correct option that correctly lists the VSEPR shapes for atoms I, II, and III. This will help in better understanding and applying the VSEPR model in molecular geometry determination.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fe4d0ca9f-229e-40d6-ac53-f10954775736%2Fc5977607-3ec8-472c-b6a2-4fcec8148c8f%2Ftpnv9o_processed.jpeg&w=3840&q=75)
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