The number and arrangement of electrons orbiting in an atom's outer shell determine its chemical activity.

Name: The number and arrangement of electrons orbiting in an atom's outer shell determine its chemical activity.
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Quizplus · Accepted Answer

This statement is true. The outermost shell of an atom, also known as the valence shell, contains electrons that participate in chemical reactions and bonding with other atoms. The number and arrangement of these electrons determine the chemical properties of the atom.

The Number and Arrangement of Electrons Orbiting in an Atom's