Halogens

Flashcards on Halogens

Halogens

Non-metals that do not conduct electricity, are brittle and crumbly when solid, and are poisonous and smelly.

Atomic radius of Halogens

Increases as you go down the group.

Melting and Boiling Points of Halogens

Increase as you go down the group.

Reactivity of Halogens

Decreases down the group as it's harder to gain an electron (larger atoms, more shielding).

Displacement Reaction Example

Chlorine displaces Bromine from KI: Cl2 + 2KBr -> 2KCl + Br2

Chlorine Uses

Bleaching agent, water purification, pesticides

Fluorine Uses

Dental care, toothpaste, flouridation

Bromine Uses

Flame retardants, antiseptic

Iodine Uses

Thyroid function, photographic materials