1. Tardigrade
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  3. Chemistry
  4. At ordinary temperature and pressure chlorine is a gas, bromine a liquid, and iodine a solid. This is due to the fact that

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Q. At ordinary temperature and pressure chlorine is a gas, bromine a liquid, and iodine a solid. This is due to the fact that

Chemical Bonding and Molecular Structure

Solution:

Among the three halogens, the size decreases in the order $I_2 > Br_2 > Cl_2$ and so the intermolecular forces of attraction also decrease in the same order. Therefore, $Cl_2$ has the weakest and $I_2$ has the strongest intermolecular forces of attraction.