Examlex
The qualitative researcher
Valence Shells
The outermost electron shell of an atom that determines its bonding behavior with other atoms.
Cation
A particle with one or more units of positive charge, such as a hydrogen ion (H+) or calcium ion (Ca2+). Compare with anion.
Anion
A particle with one or more units of negative charge, such as a chloride ion (Cl-) or hydroxide ion (OH-). Compare with cation.
Isotopes
Atoms of the same element that differ in the number of neutrons within their nuclei.
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