Multiple Choice
Which of the following atoms has five valence electrons?
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10. Periodic Properties of the Elements
Valence Electrons of Elements
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Which of the following statements correctly describes valence bond theory?
A
Valence bond theory explains chemical bonding by describing the overlap of atomic orbitals to form covalent bonds.
B
Valence bond theory does not consider hybridization of atomic orbitals.
C
Valence bond theory states that electrons are delocalized over the entire molecule.
D
Valence bond theory predicts the exact bond angles in all molecules.
Verified step by step guidance1
Understand that valence bond theory (VBT) is a model used to explain how atoms form covalent bonds by overlapping their atomic orbitals.
Recognize that VBT focuses on the concept of orbital overlap, where two atomic orbitals from different atoms combine to form a bond localized between those atoms.
Note that VBT does consider hybridization of atomic orbitals, which is the mixing of atomic orbitals on the same atom to form new hybrid orbitals that can better explain molecular shapes and bonding.
Remember that VBT describes electrons as localized in bonds between specific atoms, rather than delocalized over the entire molecule (which is a concept from molecular orbital theory).
Keep in mind that while VBT can give qualitative insights into bond angles through hybridization, it does not always predict exact bond angles for all molecules; more advanced theories or experimental data are often needed for precise values.
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