Picometers, or ! trillionth of a meter.
As measured by Slater, yes, as calculated by Clementi, no. Please see the link.
Outer Edge
atomci radii measures for an atom ionic radii measures for an ion
Look for a reference chart in a book or online. Look for a Periodic Table of the Elements that has the atomic radii on it.
The atomic radii is the measure of the size of the atoms in a chemical element. This is the distance from the nucleus to the boundary of the electrons' cloud.
As we descend down the group, the atomic radii increases. This is because the number of shells increases.
atomic radii increases from left to right in the periodic table from metal to non metal in the right
vanadiums atomic weight is 50 AMUs
The ionic radii of metallic elements is smaller than its atomic radii, because the ion has less electrons. This gives it a smaller electron cloud and makes the atom smaller.
It is 31 pico meter.
Noble gases have larger atomic radii than alkali metals in the same period.
Neodymium has an atomic radius of 181 picometers (181 pm).