Is the pattern of the atomic radius absolute or general?

It is general, because the pattern is irregular.

Atomic center is the center of the atom, also called as Nucleus. Atomic Radius is the distance between the center of the nucleus and outermost shell of the atom. It is nearly about 1.2 * 10-10 m.

Iodine has 53 electrons in its orbitals while fluorine only has nine. This does not even count the proton/neutron variance.

Atomic radius is the measure from the middle of an atom to the outter edge. Usually mesured between two atom. Measure from the middle of one atom to the middle of another and then divide by two.

It is the distance between the nucleus and the outer-most electrons.