26 Fe 55.8452

Iron

TRANSITION METAL

Phase: Solid

Discovered: 5000 BC

Block: D

Summary

Iron is a chemical element with symbol Fe (from Latin:ferrum) and atomic number 26. It is a metal in the first transition series. It is by mass the most common element on Earth, forming much of Earth's outer and inner core.

Appearance: lustrous metallic with a grayish tinge

Source: Wikipedia

Physical Properties

Atomic Mass 55.8452 u

Density 7.874 g/cm³

Melting Point 1811 K

Boiling Point 3134 K

Molar Heat 25.1 J/(mol·K)

Electron Affinity 14.785 kJ/mol

Ionization Energies

1^st: 762.5 kJ/mol

2^nd: 1561.9 kJ/mol

3^rd: 2957 kJ/mol

4^th: 5290 kJ/mol

5^th: 7240 kJ/mol

6^th: 9560 kJ/mol

7^th: 12060 kJ/mol

8^th: 14580 kJ/mol

9^th: 22540 kJ/mol

10^th: 25290 kJ/mol

11^th: 28000 kJ/mol

12^th: 31920 kJ/mol

13^th: 34830 kJ/mol

14^th: 37840 kJ/mol

15^th: 44100 kJ/mol

16^th: 47206 kJ/mol

17^th: 122200 kJ/mol

18^th: 131000 kJ/mol

19^th: 140500 kJ/mol

20^th: 152600 kJ/mol

21^th: 163000 kJ/mol

22^th: 173600 kJ/mol

23^th: 188100 kJ/mol

24^th: 195200 kJ/mol

25^th: 851800 kJ/mol

26^th: 895161 kJ/mol