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Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
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louist louist
wrote...
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2 years ago

Which of the following molecules are exceptions the octet rule? Choose all correct
responses.
BF3
CHBr3 where C is the central atom
Br2
XeF2
CO
SF2
SF4
PCI4+
considering both an unfilled octet and an expanded octet?
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habibahabiba
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#1
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2 years ago Edited: 2 years ago, habiba
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louist Author
wrote...
#2
2 years ago Edited: 2 years ago, louist
can u explain how did u get this? is there an easy way to look in periodic table?
Post Merge: 2 years ago

isn’t it Br2 falls into the regular octet? is it really included here?
wrote...
#3
Staff Member
2 years ago Edited: 2 years ago, habiba
You have to draw the Lewis structure for each and determine the valence

Sorry about br2, remove it from the list, doesn't belong there!!!
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louist Author
wrote...
#4
2 years ago
thank you! how about the CO?
wrote...
#5
Staff Member
2 years ago
SHOOT, I didn't realize it was on the list either! remove it too
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louist Author
wrote...
#6
2 years ago
thanks last one, do u think the PCl4+ should be in the list?
wrote...
#7
Staff Member
2 years ago
no, it follows
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louist Author
wrote...
#8
2 years ago
okay thanks a lot!
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