Periodicity
Asked by Divyank Singh Tiwari · 5 years ago
Does the 18th group elements have larger size in their respective periods. ? And if it is then why it is greater than 17 period element but not of s block respective period elements. Explain
1 Answer
Across the period in the periodic table, atomic size decreases up to halogens but increases in noble gases. This is because in case of inert or noble gases all the orbitals are completely filled and hence inter electronic repulsions are maximum. In case of noble gases atomic radius is determined by van der waals radius and as we know that van der waals radius is larger than the ionic radius that is in case of halogens. Hence the atomic size of noble gases is larger than that of halogens.
Aditi Ghuge · 5 years ago
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