What is the electron configuration for Fe? A. [He] 4s2 3d6

B. [Ne] 4s2 3d6

C. [Ar] 4s2 3d6

D. [Ar] 4s2 4d6

Hello thereone of the following properties was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version. which property fits this description? answer: atomic mass  was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

Ahigh energy (high speed) particle (alpha or beta or neutron) are shot at the target;