Multiple Choice
What is the molecular geometry of BrF_5?
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12. Molecular Shapes & Valence Bond Theory
Molecular Geometry
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What is the molecular geometry of the ClCN (cyanogen chloride) molecule?
A
Tetrahedral
B
Linear
C
Bent
D
Trigonal planar
Verified step by step guidance1
Step 1: Identify the central atom in the ClCN molecule. Since ClCN is a linear molecule with Cl, C, and N atoms, the carbon (C) atom is the central atom bonded to both chlorine (Cl) and nitrogen (N).
Step 2: Determine the number of regions of electron density around the central atom (carbon). Carbon forms two sigma bonds: one with Cl and one with N. There are no lone pairs on the carbon atom in this molecule.
Step 3: Use the VSEPR (Valence Shell Electron Pair Repulsion) theory to predict the molecular geometry. With two regions of electron density and no lone pairs, the electron pairs will arrange themselves as far apart as possible, which is 180° apart.
Step 4: Based on the arrangement of electron pairs, the molecular geometry around the carbon atom is linear.
Step 5: Confirm that the linear geometry matches the molecular formula and bonding pattern of ClCN, which is consistent with the observed linear shape.
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