State whether the following statement is true or false: $Na, Mg, Li, Al, Si, F, P$ and $Cl$ belong to the third period of the Modern periodic table.

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(FALSE) The statement is False.
In the Modern periodic table,the third period consists of elements with atomic numbers $11$ to $18$,which are $Na, Mg, Al, Si, P, S, Cl$ and $Ar$.
$Li$ (Lithium) has an atomic number of $3$ and belongs to the second period,while $F$ (Fluorine) has an atomic number of $9$ and also belongs to the second period.

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