Electronegativity and Polarity (OCR A-Level Chemistry A): Flashcards

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Electronegativity and Polarity
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Electronegativity definition

How strongly an atom attracts bonding electrons

Most electronegative element & Pauling value

Fluorine (F), 4.0

Electronegativity trend across a period

Increases (left to right)

Electronegativity trend down a group

Decreases (top to bottom)

Electronegativity diff. for polar covalent bonds

0 to 1.8

Electronegativity diff. for ionic bonds

Greater than 1.8

Which atom gets δ−\delta^- charge?

More electronegative atom

Which atom gets δ+\delta^+ charge?

Less electronegative atom

Polarity of H2O\text{H}_2\text{O} and why

Polar; bent shape so dipoles don't cancel

Polarity of CO2\text{CO}_2 and why

Non-polar; linear shape so dipoles cancel

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Atoms, Ions and Compounds

Amount of Substance

Acids and Redox

Electrons and Bonding

Shapes of Molecules and Intermolecular Forces

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Atoms, Ions and Compounds

Amount of Substance

Acids and Redox

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Shapes of Molecules and Intermolecular Forces

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Atoms, Ions and Compounds

Amount of Substance

Acids and Redox

Electrons and Bonding

Shapes of Molecules and Intermolecular Forces

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Atoms, Ions and Compounds

Amount of Substance

Acids and Redox

Electrons and Bonding

Shapes of Molecules and Intermolecular Forces

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