Created by charlotte.e.evan
almost 11 years ago
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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
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