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6.6 Lewis Structures for Molecules -- Part 2
There are exceptions to the octet rule.
There is a hydrogen molecule that only requires two electrons or a single bond.
The nonmetals form numbers.
The B atom has three electrons to share.
Boron compounds have six electrons on the B atoms and form three bonds.
Although we will usually see compounds of P, S, Cl, and I with octets, they can form a molecule in which they share more of their electrons.
Their valence electrons can be expanded to 10, 12 or 14 electrons.
The P atom in PCl3 has an octet, but in PCl5 it has five bonds with 10 electrons.
In H2S, the S atom has an octet, but in SF6, there are six bonds to sulfur.
Draw the Lewis structure for each molecule.
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