The three metals in the third period of
the modern periodic table.
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The third period contains eight elements: sodium (Na), magnesium (Mg), aluminium (Al), silicon (Si), phosphorus (P), sulfur (S), chlorine (Cl), and argon (Ar). Among these, three are metals (sodium, magnesium, aluminium), four are nonmetals (phosphorous, sulfur, chlorine, argon) and one is metalloid (silicon).
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The third period contains eight elements: sodium (Na), magnesium (Mg), aluminium (Al), silicon (Si), phosphorus (P), sulfur (S), chlorine (Cl), and argon (Ar). Among these, three are metals (sodium, magnesium, aluminium), four are nonmetals (phosphorous, sulfur, chlorine, argon) and one is metalloid (silicon).
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