Multiple Choice
Which of the following elements has the same number of valence electrons as aluminum?
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10. Periodic Properties of the Elements
Valence Electrons of Elements
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Which of the following statements summarizing valence bond theory is correct?
A
Valence bond theory explains bonding solely in terms of ionic interactions.
B
Covalent bonds are formed when atomic orbitals of two atoms overlap and share electrons.
C
Valence bond theory states that electrons are delocalized over the entire molecule.
D
According to valence bond theory, only s orbitals participate in bonding.
Verified step by step guidance1
Understand that valence bond theory (VBT) describes how atoms form covalent bonds by overlapping their atomic orbitals, allowing electrons to be shared between atoms.
Recognize that VBT focuses on the concept of orbital overlap rather than ionic interactions; ionic bonding involves electrostatic attraction between ions, which is not the main focus of VBT.
Recall that VBT explains bonding through localized electron pairs between two atoms, meaning electrons are shared in specific bonds rather than being delocalized over the entire molecule (which is a concept from molecular orbital theory).
Note that VBT involves the overlap of various types of atomic orbitals (s, p, d, etc.), not just s orbitals, to form bonds depending on the atoms involved and their hybridization states.
Conclude that the correct summary of valence bond theory is: 'Covalent bonds are formed when atomic orbitals of two atoms overlap and share electrons.'
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