The quoted web site also lists the atomic radii of other, heavier noble gases but these may not be confirmed values, so they are not listed here.
Table of n, a(n) for n=1..6.
Wikipedia, Noble gas
The atomic radius of helium is 32 picometers.
Sequence in context: A234875 A153981 A264589 * A135110 A228665 A101539
Adjacent sequences: A100014 A100015 A100016 * A100018 A100019 A100020
Parthasarathy Nambi, Nov 18 2004