Which of the following violates the Octet rule

[From: ] [author: ] [Date: 11-11-17] [Hit: ]

BCl3
H2CO
OF2
AsCl5
SF4
CCl4

I know AsCl5 and SF4 do, but what's the third one>

Toledo eh? Aris is a snore festival. the last one is BCl3 :D

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