AP Chemistrymediummcq1 pt
Which of the following has an expanded octet?
A.SF₆
B.NF₃
C.CH₄
D.H₂O
Explanation
Core Concept
Sulfur in period 3 has empty 3d orbitals available, letting it hold twelve electrons around six S–F bonds. Period-2 elements cannot expand their octets.
Correct Answer
ASF₆
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