Question

The reactivity of an atom arises from __________.

Answer
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the sum of the potential energies of all the electron shells

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the potential energy of the valence shell

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the energy difference between the s and p orbitals

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the average distance of the outermost electron shell from the nucleus

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the existence of unpaired electrons in the valence shell

Answers

GPT-4o mini
The reactivity of an atom arises from **the existence of unpaired electrons in the valence shell**.

Unpaired electrons determine how readily an atom can bond with other atoms, as they are available to be shared or transferred during chemical reactions.