And if we inhale some of the halogen gas, we will suffocate and die, because halogens react in our body in a very detrimental way. Now let's look specifically at fluorine. Now, fluorine exists in at room temperature in a diatomic gas form, f two form. So if we inhale, for example, fluorine, the gas, that gas will cause damage in our body and we will suffocate. Now, fluorine is the most electronegative atom out there. In other words, it has the highest affinity for electrons.