What is a spontaneous reaction? A. A reaction that occurs without the addition of energy
B. A reaction that requires an input of energy to occur
C. A reaction with a low activation energy
D. A reaction when a high activation energy

Answerspecies;

Tell me the answer choices and i would be able to answer. : )

So the main goal for the elements is stability which is a complete/full valence shell and typically the magic number for a stable element is 8 valence electron but not always. so elements to the left of the periodic table tend to be way less stable then those on the right, so the elements on the left are much more reactive.

Bbecause it is a psychical reaction.