The chemical reactivity of an element is dependent on

  • A. The number of protons.
  • B. The arrangement of neutrons.
  • C. The number of electrons in the outermost shell.
  • D. The number of protons and neutrons.
  • E. The number of electrons in the inner shell.
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Chemical activity depends on electron in outermost shell of an element. If we take further look, atomic radius, nuclear charge and electronic shielding determine how outermost shell electrons are going to react. More basic questions and answers on elements.
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