Periodic Table:

Element 59 - Praseodymium / Praseodymium

(Latin / English)

Mass Number

Atomic Mass

% Abundance

Nuclear Spin

141

140.9076

100

5/2+

142 *

141.9100

0

2

143 *

142.9108

0

7/2+

(* = unstable isotope)

Electron Configuration:

[Xe] 4f3 6s2

Relative Atomic Mass:

140.91

State (25°C, 1 atm):

solid, metal

Density:

6773 kg/m3

Melting Temperature:

1204 K

Boiling Temperature:

3785 K

© W. Bauer, 1999