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How many electrons does the allyl radical have in p orbitals
Cretaceous Era
A geological epoch that lasted from about 145 to 66 million years ago, at the end of the Mesozoic Era, known for the extinction of dinosaurs.
Meteor Impact
The collision of a meteoroid with the Earth or another planet, causing effects ranging from craters to climate changes depending on the size and speed of the meteoroid.
Extinction
The process through which a species ceases to exist due to the death of its last remaining members.
Dinosaurs
A diverse group of prehistoric reptiles that lived during the Mesozoic Era, now extinct.
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