Group 7 - Halogens

Fluorine, Chlorine, Bromine, Iodine, Astatine

At Room Temperature

Chlorine:- fairly reactive- poisonous-dense green gas

Bromine:- dense- poisonous- orange liquid

Iodine:- dark grey crystalline solid- high boiling point

Group 7 elements are known as halogens7 electrons in outer shellall react by gaining 1 electronform negative ionsimilar propertiesas you go down reactivity decreaseslarger radius-extra electron is further from nucleusas you go down melting & boiling point increases

Halogens