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a) Halogens - Group (VII) elements
b) Clorine molecule is smaller and the strength of van der waals forces between molecules of chlorine is weak as compared to iodine
johnmulu answered the question on February 2, 2017 at 09:24
Halogens are group 17 elements in the periodic table, they are non-metallic in nature. They are commonly refered to as 'salts'and exist in all of the 3 states of matter at room temperature: with Bromine in liquid, and Iodine in solid.
English Grammar,Literature tutor answered the question on February 2, 2017 at 11:41
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