Question

which of the following molecule does not obey octet rule option first H2Osecond CO2 3 third O2 fourthCO​

Answer 1

Answer:

BCl3 do not obey octet rule.It is a electron deficient molecule.As it share only three electron with chlorine atom . After forming a molecule boron has only six electrons I.e three from chlorine atom and three of its own.

Answer 2

Answer:

I think option 4 CO doesn't follows octet rule...