The weakness occurs by the four negatively charged electrons repel each other as they are squeezed into close orbit around the two carbons.
(The weakness; occurs; T:by the four) (negatively charged electrons; repel; each other; T:as they are squeezed into close orbit around the two carbons) (they; are squeezed; into close orbit around the two carbons)
The weakness negatively charged electrons they
occurs repel are squeezed
T:by the four
each other T:as they are squeezed into close orbit around the two carbons
into close orbit around the two carbons