21 Sc 44.9559085

Scandium

TRANSITION METAL

Phase: Solid

Discovered: Lars Fredrik Nilson

Block: D

Summary

Scandium is a chemical element with symbol Sc and atomic number 21. A silvery-white metallic d-block element, it has historically been sometimes classified as a rare earth element, together with yttrium and the lanthanoids. It was discovered in 1879 by spectral analysis of the minerals euxenite and gadolinite from Scandinavia.

Appearance: silvery white

Source: Wikipedia

Physical Properties

Atomic Mass 44.9559085 u

Density 2.985 g/cm³

Melting Point 1814 K

Boiling Point 3109 K

Molar Heat 25.52 J/(mol·K)

Electron Affinity 18 kJ/mol

Ionization Energies

1^st: 633.1 kJ/mol

2^nd: 1235 kJ/mol

3^rd: 2388.6 kJ/mol

4^th: 7090.6 kJ/mol

5^th: 8843 kJ/mol

6^th: 10679 kJ/mol

7^th: 13310 kJ/mol

8^th: 15250 kJ/mol

9^th: 17370 kJ/mol

10^th: 21726 kJ/mol

11^th: 24102 kJ/mol

12^th: 66320 kJ/mol

13^th: 73010 kJ/mol

14^th: 80160 kJ/mol

15^th: 89490 kJ/mol

16^th: 97400 kJ/mol

17^th: 105600 kJ/mol

18^th: 117000 kJ/mol

19^th: 124270 kJ/mol

20^th: 547530 kJ/mol

21^th: 582163 kJ/mol