The atomic size of group 18 elements are greater than that of group 17 elements easy explanation for 0
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The atomic size of group 18 elements is greater than group 17 elements because -
-The atomic numbers of group 18 elements are higher than that of group 17 elements.
-So, there is the addition of one shell as we move from group 17 to 18.
-The force of attraction between the nucleus and the outermost electrons increases which leads to an increase in size.
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