Robets-Austen, W.

… Periodic table Element symbol = Fe Atomic number = 26 Atomic weight = 55.847 ± 3 Abundance in the earth's crust = 5.63% (4th place) Stable nuclide abundance ratio ⁵⁴ Fe = 5.84%, ⁵⁶ Fe = 91.68%, ⁵⁷ Fe = 2.17%, ⁵⁸ Fe = 0.31% Melting point = 1535 °C Boiling point = 2750 °C Specific gravity of solid = 7.86 (20 °C) Specific gravity of liquid = 6.9 (1530 °C) Electron configuration = [Ar] 3d ⁶ 4s ² Main oxidation number = II, III One of the iron group elements belonging to the 4th period of the VIII group of the periodic table. …

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Source | Heibonsha World Encyclopedia 2nd Edition | Information

…周期表元素記号＝Fe　原子番号＝26原子量＝55.847±3地殻中の存在度＝5.63％(4位)安定核種存在比　⁵⁴Fe＝5.84％，⁵⁶Fe＝91.68％，⁵⁷Fe＝2.17％，⁵⁸Fe＝0.31％融点＝1535℃　沸点＝2750℃固体の比重＝7.86(20℃)液体の比重＝6.9(1530℃)電子配置＝［Ar］3d⁶4s²　おもな酸化数＝II，III周期表第VIII族第4周期に属する鉄属元素の一つ。…

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