Define monovalent, divalent,trivalent and tetravalent elements with 2 examples for each ?
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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
Divalent:
An atom, ion, or chemical group with a valence of two, is called divalent.
Examples:
Atoms that are divalent are
- Beryllium
- Oxygen
- Magnesium
Trivalent:
An atom, ion, or chemical group with a valence of three, is called trivalent.
Examples:
Atoms that are trivalent are
- Boron
- Nitrogen
- Aluminium
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