Periodic Table of Elements - Sorted by Atomic Radius. Moreover, atomic radius decreases as we move from left to right. The iron atom has a radius of 126 pm and a Van der Waals radius of 194 pm. The number of electrons in each of Iron's shells is 2, 8, 14, 2 and its electron configuration is Ar 3d 6 4s 2.
If you need to cite this page, you can copy this text: It is the shortest distance between the atoms nuclei and the outermost shell of the atom. Atomic Number: 26: Atomic Radius: 194 pm (Van der Waals) Atomic Symbol: Fe: Melting Point: 1538 C: Atomic Weight: 55. Iron (atomic symbol: Fe, atomic number: 26) is a Block D, Group 8, Period 4 element with an atomic weight of 55.845.
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