Organic Chemistry 9th Edition

Published by Brooks Cole
ISBN 10: 1305080483
ISBN 13: 978-1-30508-048-5

Chapter 1 - Structure and Bonding - Problem: 14

Answer

$a)$ 2 lone pairs of electrons $b)$ 1 lone pair of electrons $c)$ 1 lone pair of electrons $d)$ 2 lone pairs of electrons

Work Step by Step

$a)$ (Oxygen in Dimethyl Ether) The atom has 2 pairs of non-bonding electrons, and we can expect a bent (derived from tetrahedral) geometry for this atom's bonds. $b)$ (Nitrogen in Trimethyl Amine) The atom has 1 pair of non-bonding electrons, and we can expect a trigonal pyramidal (derived from tetrahedral) geometry for this atom's bonds. $c)$ (Phosphorus in Phosphine [PH3]) The atom has 1 pair of non-bonding electrons, and we can expect a trigonal pyramidal (derived from tetrahedral) geometry for this atom's bonds. $d)$ (Sulfur in Methionine) The atom has 2 pairs of non-bonding electrons, and we can expect a bent (derived from tetrahedral) geometry for this atom's bonds.
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