Problem: These species do not obey the octet rule. Draw a Lewis structure for each, and state the type of octet-rule exception:(a) PF6−

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FREE Expert Solution
  • A molecule that doesn't obey the octet rule may have less or more than 8 electrons on its valence shell
  • For PF6-, will appear as central atom since its less electronegative than F
  • P has 5 valence electrons while F has 7. Total v.e is 48 (5(1) + 7(6) + 1 (from negative charge) = 48)
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Problem Details

These species do not obey the octet rule. Draw a Lewis structure for each, and state the type of octet-rule exception:

(a) PF6