Structure 2.2.5-6: Bond polarity and molecule polarity

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5 Terms

1
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electronegativity

A measure of how much an atomic nucleus attracts the shared electrons that are involved in a covalent bond.

2
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Pauling scale

The scale on which electronegativity is measured, ranging from 0.0 to 4.0 Pauling units.

3
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non-polar bonds

A covalent bond formed between two atoms with equal electronegativity values which results in equal sharing of the electrons in their bond.

4
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polar bond

when there is difference in electronegativity that causes asymmetrical electron distribution, creating a partially positive end and a partially negative end. typically a difference of 0.4–1.7

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dipole

The two separated opposite electric charges, δ+ and δ-, existing in a polar bond.