Name a divalent monatomic element.
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Monovalent
An atom, ion, or chemical group with a valence of one, which thus can form one covalent bond is called monovalent.
Examples
Atoms that are monovalent are
- Hydrogen
- Lithium
- Sodium
- Chlorine
Divalent
An atom, ion, or chemical group with a valence of two, is called divalent.
Examples
Atoms that are divalent are
- Beryllium
- Oxygen
- Magnesium
- Sulphur
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