Q. Consider the following statements:
1.Halogens are highly reactive and don’t exist freely in nature.
2.In compounds, fluorine is the most prevalent halogen found in Earth’s crust.
Which of the statement(s) given above is/are correct?
Explanation –
Statements 1 and 2 are correct. Halogens refer to the six nonmetallic elements found in 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). Halogens are highly reactive and don’t exist freely in nature. They are the most reactive nonmetals. Halogens are the only group on the periodic table where elements exist as solids, liquids, and gases at room temperature. They are strong oxidizers and have very high electronegativities. Fluorine is obtained from a calcium salt known as calcium fluoride, or fluorspar. It is a highly reactive element. In compounds, fluorine is the most prevalent halogen found in Earth’s crust. It is used in making fluorochemicals, plastics, agrochemicals, lithium-ion batteries, and drugs.
Source: Forum IAS
