Physical state of Halogens

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Physical state of Halogens->

 Halogens are non polar molecules. On moving down the group the van der waals forces of attraction increases due to the increase of the atomic sizes. As a result of which,the state of the molecules increases from gaseous state to solid state. Therefore, F²,Cl² are gases, Br² is liquid and I² is a solid at room temperature. Further on account of weak van der walls forces , the halogens are volatile in nature. 

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