An element belongs to group 17 of the periodic table. This element exists most likely as a Halogen.
A solid of this element would have a black, metallic formation.
What are the 17th group elements?
Halogen exists in any of the six nonmetallic elements that constitute Group 17 (Group VIIa) of the periodic table. The halogen elements exist as fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatine (At), and Tennessee (Ts).
A unique feature of halogens exists that it exists the only group in the whole periodic table that exists formed of elements that belong to all three classical forms of matter (solid, liquid, and gas) when maintained under standard requirements of pressure and temperature.
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