The element that can even diffuse through sil | vedclass

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(A) Noble gases are monoatomic and possess the largest atomic radius in their respective periods. The atomic size of noble gases increases down the gr

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$He$

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(A) Noble gases are monoatomic and possess the largest atomic radius in their respective periods. The atomic size of noble gases increases down the group from $He$ to $Rn$ due to the addition of new shells. Among the noble gases, $He$ has the smallest atomic size. Due to its extremely small size, $He$ atoms can easily diffuse through the pores of silica glass. The atomic radius of noble gases is referred to as the van der Waals radius.

The element that can even diffuse through silica glass is

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