Examlex
Which of the following was a long-term impact of the Crusades in Europe?
Valence Shell
The outermost shell of an atom that contains the electrons most involved in chemical reactions.
Atom
The smallest unit of a chemical element, consisting of a nucleus of protons and neutrons, surrounded by electrons.
Negative Charge
A type of electrical charge characterized by the presence of more electrons than protons in an atom or molecule.
Electron
A subatomic particle with a negative charge, fundamental to electricity and chemical bonding.
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