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Question & Answer
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Electronegativity increases across periods, leading to more polar bonds.
Electronegativity decreases down a group, causing all bonds to be nonpolar.
Electronegativity is irrelevant to bond polarity and only affects atomic size.
Electronegativity increases down a group, leading to less polar bonds.
Understanding the Answer
Let's break down why this is correct
Electronegativity is a measure of how strongly an atom pulls shared electrons. Other options are incorrect because People often think that because electronegativity goes down as you go down a group, bonds become nonpolar; Some think electronegativity has no effect on polarity.
Key Concepts
Electronegativity
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Definition
Electronegativity measures an atom's ability to attract shared electrons in a molecule. It influences bond polarity and chemical reactions. Electronegativity trends across periods and groups provide insights into the nature of chemical bonds and the behavior of compounds.
Topic Definition
Electronegativity measures an atom's ability to attract shared electrons in a molecule. It influences bond polarity and chemical reactions. Electronegativity trends across periods and groups provide insights into the nature of chemical bonds and the behavior of compounds.
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