Lewis Diagrams

AP Chemistry· difficulty 4/5

Which species has an expanded octet on its central atom?

  • A

    NH3\text{NH}_3

  • B

    SF6\text{SF}_6 (12 electrons on S)

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  • C

    H2O\text{H}_2\text{O}

  • D

    CH4\text{CH}_4

Explanation

SF6_6 has 6 bonding pairs on S = 12 electrons (expanded octet, possible for period 3+ elements).

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