how many halogens are in the period 3 of the periodic table

Halogen, any of the six nonmetallic elements that constitute Group 17 (Group VIIa) of the periodic table. The halogen elements are fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatine (At), and tennessine (Ts).

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Eduard22sly Eduard22sly · Answer 2 · 2021-10-21T14:13:23+02:00

The number of Halogens in period 3 of the periodic table is one (i.e Chlorine)

The period to which an atom belongs to can tell how many energy levels it has.

Elements in period 3 of the periodic table has 3 energy levels or electron shells.

The elements that makes up the Halogens are: Fluorine (F), Chlorine (Cl), Bromine (Br), Iodine (I) etc.

Among these elements, only chlorine (Cl) has 3 electron shells.

Therefore, we can conclude that the number of Halogens in period 3 of the periodic table is one (i.e Chlorine)

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