Polarity and Electronegativity | Baamboozle - Baamboozle

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In a polar bond, are valence electrons shared: equally or unequally?

Unequally (tend to be found on one side)

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How can a molecule contain polar bonds but not be a polar molecule overall?

It depends on the shape of the molecule. Polar forces may cancel each other out.

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What bond would two atoms of the same element share?

Nonpolar covalent

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Given the following EN values, state two molecules which will form a polar bond?

C-Br, C-Cl, P-Br, P-Cl

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What does it mean to be a polar molecule?

The molecule has a separation of charge: partial positive on one side and partial negative on the other side

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Which element has a partial charge in the bond between O and H?

Oxygen because it is more electronegative

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What kind of bond do sodium (Na) and bromine (Br) form? Hint: EN of Na = 0.9, EN of Br = 2.8

Ionic bond

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Silicon (Si) has an electronegativity of 1.8. Hydrogen (H) has an electronegativity of 2.1. What type of bond would SiH4 be?

Nonpolar covalent bond

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How does electronegativity change across a period of the periodic table?

EN values increase across a row, as more protons are added to the nucleus within the same electron orbital

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