Mendeleev's Periodic Table > Sc - Scandium

Sc - Scandium

Scandium was discovered in 1879 by Nilson in Sweden. Scandium is apparently a much more abundant element in the sun and certain stars than on earth. Scandium is a silvery-white metal which develops a slightly yellowish or pinkish cast upon exposure to air. It is relatively soft, and resembles yttrium and the rare-earth metals more than it resembles aluminium or titanium. Scandium reacts rapidly with many acids.

Atomic number	-	21		Density	g/mL	3
Atomic weight	u	44	.9559	Melting point	K	1812
Bonding radius	A	1	.44	Boiling point	K	3104
Atomic radius	A	2	.09	Heat of vaporization	kJ/mol	314	.2
Ionization Potential	V	6	.54	Heat of fusion	kJ/mol	14	.1
Electronegativity	-	1	.36	Specific heat	J/gK	0	.6
The oxide is a weak base.				Crystal are hexagonal.
Electron config. : [Ar] 3d¹ 4s²

Isotopes of Sc (Scandium):

MASS abundancy Halflife Particle, Energy Decay Product(s) Isotopic Mass	040 182.3 msec EC/ECa/ECp,14.320 Ca-40/Ar-36/K-39 39.977964	041 596.3 msec EC,6.495 MeV Ca-41 40.969251	042 681.3 msec EC,6.426 MeV Ca-42 41.965516	042a 61.7 sec EC,7.042 MeV Ca-42 41.966178
MASS abundancy Halflife Particle, Energy Decay Product(s) Isotopic Mass	043 3.891 hr EC,2.221 MeV Ca-43 42.961151	044 3.927 hr EC,3.653 MeV Ca-44 43.959403	045 100% Stable 44.955910	046 83.79 da B-,2.367 MeV Ti-46 45.955170
MASS abundancy Halflife Particle, Energy Decay Product(s) Isotopic Mass	047 3.3492 da B-,1.992 MeV Ti-47 46.952407	048 43.67 hr B-,3.994 MeV Ti-48 47.952234	049 57.2 min B-,2.006 MeV Ti-49 48.950024	050 102.5 sec B-,6.888 MeV Ti-50 49.952186
MASS abundancy Halflife Particle, Energy Decay Product(s) Isotopic Mass	051 12.4 sec B-,6.508 MeV Ti-51 50.953602	052 8.2 sec B-,9.010 MeV Ti-52 51.956564	054 1 usec B-,11.300 MeV Ti-54 53.962962

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