Does polar bonds affect bond angles?

(Polar molecules, Non-polar molecules, etc.)

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Katherine Fitzgerald 1A
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Does polar bonds affect bond angles?

Postby Katherine Fitzgerald 1A » Tue Jul 23, 2019 8:15 pm

Are bond angles only a function of repulsion between lone pairs and bonded atoms? Or are they also affected by dipole moments? Why or why not? I would think if electrons tended to spend more time closer to one atom than another, it could have an effect.

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Re: Does polar bonds affect bond angles?

Postby Chem_Mod » Tue Jul 23, 2019 11:45 pm

Dipole moment measures the extent of net charge separation in a molecule. Bond dipole moment is used to determine molecular polarity. Valence electrons contribute to the electron arrangement about the central atom but only bonded atoms are considered in the identification of the shape. Lone pairs distort the shape of the molecule so as to reduce lone pair-bonding pair repulsions.

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