Introduction to halogens

INTRODUCTION TO HALOGENS

• The halogens are the series of non-metal elements from group 17(VII A) of the periodic table. The word halogen means "Salt former" and it includes

1. Fluorine (F)
2. Chlorine (Cl)
3. Bromine (Br)
4. Iodine (I)
5. Astatine (At)

• The valence shell electronic configuration of these elements is ns2np5
• Halogens form diatomic molecules in their elemental state. The bond in these diatomic molecules is non-polar with a single covalent bond.
• Halogens can easily combine with other elements and are never seen uncombined in nature.
• Halogens elements have seven valence electrons, and they require one additional electron to form a fully octeted. This characteristic makes them more reactive than other non-metal elements.
• All three states of halogens are represented by halogens at room temperature.