Element 99 - Einsteinium / Einsteinium

(Latin / English)

Mass Number

Atomic Mass

% Abundance

Nuclear Spin

252 *

252.0829

0

5-

253 *

253.0848

0

7/2+

254 *

254.0880

0

7+

255 *

255.0903

0

7/2+

(* = unstable isotope)

Mass Number	Atomic Mass	Nuclear Spin
252 *	252.0829	5-
253 *	253.0848	7/2+
254 *	254.0880	7+
255 *	255.0903	7/2+

Electron Configuration:

[Rn] 5f¹¹ 7s²

Relative Atomic Mass:

252.08

State (25°C, 1 atm):

solid, metal

Density:

?

Melting Temperature:

1133 (-/+ 30) K

Boiling Temperature:

?

Electron Configuration:	[Rn] 5f¹¹ 7s²
Relative Atomic Mass:	252.08
State (25°C, 1 atm):	solid, metal
Density:	?
Melting Temperature:	1133 (-/+ 30) K
Boiling Temperature:	?