25 Mn 54.9380443

Manganese

TRANSITION METAL

Phase: Solid

Discovered: Torbern Olof Bergman

Block: D

Summary

Manganese is a chemical element with symbol Mn and atomic number 25. It is not found as a free element in nature; it is often found in combination with iron, and in many minerals. Manganese is a metal with important industrial metal alloy uses, particularly in stainless steels.

Appearance: silvery metallic

Source: Wikipedia

Physical Properties

Atomic Mass 54.9380443 u

Density 7.21 g/cm³

Melting Point 1519 K

Boiling Point 2334 K

Molar Heat 26.32 J/(mol·K)

Electron Affinity -50 kJ/mol

Ionization Energies

1^st: 717.3 kJ/mol

2^nd: 1509 kJ/mol

3^rd: 3248 kJ/mol

4^th: 4940 kJ/mol

5^th: 6990 kJ/mol

6^th: 9220 kJ/mol

7^th: 11500 kJ/mol

8^th: 18770 kJ/mol

9^th: 21400 kJ/mol

10^th: 23960 kJ/mol

11^th: 27590 kJ/mol

12^th: 30330 kJ/mol

13^th: 33150 kJ/mol

14^th: 38880 kJ/mol

15^th: 41987 kJ/mol

16^th: 109480 kJ/mol

17^th: 118100 kJ/mol

18^th: 127100 kJ/mol

19^th: 138600 kJ/mol

20^th: 148500 kJ/mol

21^th: 158600 kJ/mol

22^th: 172500 kJ/mol

23^th: 181380 kJ/mol

24^th: 785450 kJ/mol

25^th: 827067 kJ/mol