Multiple Choice
What is the molecular geometry of the ion ICl_2^-?
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12. Molecular Shapes & Valence Bond Theory
Molecular Geometry
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What is the molecular geometry of H_2S?
A
Bent
B
Trigonal planar
C
Linear
D
Tetrahedral
Verified step by step guidance1
Identify the central atom in the molecule H\_2S, which is sulfur (S).
Determine the number of valence electrons for sulfur and hydrogen. Sulfur has 6 valence electrons, and each hydrogen has 1 valence electron.
Draw the Lewis structure of H\_2S by placing sulfur in the center and bonding it to two hydrogen atoms with single bonds. Then, add lone pairs to sulfur to complete its octet.
Count the total number of electron domains (bonding and lone pairs) around the sulfur atom. In H\_2S, there are two bonding pairs and two lone pairs.
Use the VSEPR (Valence Shell Electron Pair Repulsion) theory to predict the molecular geometry. With two bonding pairs and two lone pairs, the shape is bent (or angular), not linear or trigonal planar.
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