The element that has the smallest atomic radius among these is krypton.
What is Krypton?
- Krypton is a chemical element found in Group 18 of the periodic table.
- The krypton element symbol is Kr, its atomic number is 36, and its atomic mass is 83.798.
- The atomic radius of the Krypton atom is 116pm (covalent radius).
- There is more Coulomb force attracting the valence electrons of krypton than there is attracting the valence electron of potassium and other elements, accordingly, the atomic radius of krypton is smaller than the atomic radius of potassium, iron, arsenic, and bromine.
Hence, the element that has the smallest atomic radius among these is krypton.
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