Multiple choice

Which of the following sets of molecules are exceptions of octet rule?

  1. SF6, AlCl3, PCl5, CCl4

  2. SF6, PCl3, BCl3, NF3

  3. SF4, NH3, BeCl2, BCl3

  4. SF6, PCl5, BeCl2, BF3

  5. SF4, PCl3, NF3, BF3
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

BeCl2: 4 electron in valence shell of Be ( incomplete octet) BF3: 6 electrons is valence shell of B (incomplete octet) SF6: 12 electrons in valence shell of S (expanded octet). PCl5: 10 electrons in valence shell of P (expanded octet). All of the above are exceptions of octet rule.

Keep practicing — related questions