Write short notes on : Halogens or group 17 elements.
Answers
Answer:
Explanation:
Group 17 is the second column from the right in the periodic table and contains six elements:
fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatine (As), and tennessine (Ts).
Astatine and tennessine are radioactive elements with very short half-lives and thus do not occur naturally
Halogen have very high electronegativities
They have seven valence electrons (one short of a stable octet)
They are highly reactive, therefore toxics
The halogens are Fluorine (F), Chlorine (Cl), Bromine (Br), Iodine (I) and Astatine (At)
Down the group, atom size increases.
Halogens are a group of elements on the periodic table found in group 17. They are non-metals, and the term "halogen" means "salt-former" because halogens react with metals to produce many important salts. Let's think about the chlorine ion, which is usually obtained from table salt (NaCl).