Why third period elements are called typical elements
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The third period contains eight elements: sodium, magnesium, aluminium, silicon, phosphorus, sulfur, chlorine, and argon. The first two, sodium and magnesium, are members of the s-block of the periodic table, while the others are members of the p-block.
These elements have by definition no incompletely filled d or f orbitals, and the valence electrons are located in sand porbitals. The reactions included are designed to illustrate points in the chemistry of a given subgroup of the periodic table and to demonstrate more general theoretical considerations.
These elements have by definition no incompletely filled d or f orbitals, and the valence electrons are located in sand porbitals. The reactions included are designed to illustrate points in the chemistry of a given subgroup of the periodic table and to demonstrate more general theoretical considerations.
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because each element in the third period has properties representative of the group that it belongs to
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