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Identify the compound with atoms that have an incomplete octet. A) BF3 B) ICl5 C) CO2...

Identify the compound with atoms that have an incomplete octet.

A) BF3

B) ICl5

C) CO2

D) CO

E) Cl2

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Answer #1

BF3 is the only compound where we will have incomplete octet
This is because B has 3 electrons in its valence shell and it receives 3 more from F
So, B has in total 6 electrons in lewis structure
So, it has less than 8 electrons and hence incomplete octet

ICl5 has excess electrons

CO2 has exact octet (O=C=O)
CO and Cl2 has also exact octet

The Answer is: A

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