Answers

2015-11-20T15:44:07+05:30
Due to the repulsion of shells of electron their size changes and every element differs in the size. Hence, neon is greater than fluorine as repulsion is more in neon than fluorine.
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2015-11-20T17:56:02+05:30
Every element differs in their size no element in nature is having same size...as moving right side to the periodic table obviously weight increases as atomic radius decreases
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