Textbook Question
How would you expect the extent of overlap of the bondingatomic orbitals to vary in the series IF, ICl, IBr, and I2?Explain your answer.
12. Molecular Shapes & Valence Bond Theory
Valence Shell Electron Pair Repulsion Theory
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Which of the following statements is false about VSEPR theory?
A
Each of the following counts as a single electron group: a lone pair, a single bond, a double bond, a triple bond, and a single electron.
B
The geometry of the electron groups is determined by minimizing their repulsions.
C
The number of electron groups can be determined from the Lewis structure of the molecule.
D
Bond angles can vary from the idealized angles because lone pairs of electrons take up less space than bonding groups.
E
The geometry of a molecule is determined by the number of electron groups on the central atom.
Verified step by step guidance1
Identify the key principles of VSEPR (Valence Shell Electron Pair Repulsion) theory, which states that electron groups around a central atom will arrange themselves to minimize repulsion.
Understand that each of the following counts as a single electron group: a lone pair, a single bond, a double bond, a triple bond, and a single electron. This is true according to VSEPR theory.
Recognize that the geometry of the electron groups is determined by minimizing their repulsions. This is a fundamental aspect of VSEPR theory and is true.
Acknowledge that the number of electron groups can be determined from the Lewis structure of the molecule. This is true as the Lewis structure helps visualize the arrangement of electrons.
Evaluate the statement about bond angles: Bond angles can vary from the idealized angles because lone pairs of electrons take up more space than bonding groups, not less. This makes the statement false, as lone pairs exert greater repulsion, affecting bond angles.
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