Which element is least likely to obey the octet rule in forming chemical bonds? Why?
Answer:
Boron. Boron typically forms "electron deficient" compounds like BF3, B2H6, which do not have octets. Why? Because it's the least electronegative of the series.
B because the others do form octets.
boron has 3 valence electron, if it loses it, it becomes stable. likewise carbon. but it is less likely 4 carbon to lose or gain 4 electron inorder to be stable. this is because the no of electrons to be gained or lost is too much. your answer definitely is carbon.
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