Question

Why is iodine is denser than fluorine​

Answer 1

Answer:

Iodine has a higher polarizability than flourine because of its sheer size. The bigger the atom, the higher chance that you can have a temporary dipole in that species due to fluctuations in electron position around the nucleus. For this reason, you see iodine as a solid at STP while fluorine is a gas!!

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Answer 2

Answer:

its density is more compare to fluorine