01 Introduction to Chemistry
02 Matter and the Atomic Structure
03 The Mole Concept, Chemical Formula and Equation
04 The Periodic Table of Elements
05 Chemical Bond
06 Acids, Bases and Salts
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4.4.1 Group 17 Elements – Halogens

  1. Group 17 elements are typical non-metals and also known as halogens.
  2. The elements in this group are fluorine. chlorine, bromine, iodine and astatine.
  3. In nature, all halogens exist as diatomic molecules. They are written as F2, Cl2, Br2, I2 and As2.
  4. Most of the halogens exist in nature as halide salts.
  5. Halide is the name given to the ion of halogens. The table below shows the corresponding halide of the halogen.
HalogenHalide
FluorineFluoride
ChlorineCHloride
BromineBromide
IodineIodide