[Answer] The reactivity of an atom arises from _________.

Answer: the existence of unpaired electrons in the valence shell

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The reactivity of an atom arises from _________. The reactivity of an atom arises from _____. a. the sum of the potential energies of all the electron shells b . the average distance of the outermost electron shell from the nucleus c . the existence of unpaired electrons in the valence shell d. the potential energy of the valence shell e . the energy differences between the electron shells The reactivity of an atom arises from a. the average distance of the outermost electron shell from the nucleus b . the existence of unpaired electrons in the valence shell c . the sum of the potential energies of all the electron shells d. the potential energy of the valence shell e . the energy difference between the s and p orbitals Mon Sep 15 2014 · The reactivity of an atom arises from the existence of unpaired electrons in the valence shell . Sun Jul 20 2008 · Best Answer: When atoms react they do so in order to reach the lowest energy which is the most stable. The electrons orbitals will overlap in the way that reduces the energy the most. Orbitals of similar energy will produce the greatest stabilisation.The answer you gave isn't the whole story ... An atom can have one to eight outer shell electrons. Group 1 elements are extremely reactive because they only need to donate one outer shell electron to achieve noble gas configuration. Group 2 elements with 2 electrons in their atoms are also quite reactive . group 16 … The reactivity of a...

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