Eskandyo

Scandium
21Sc
- ↑ Sc ↓ Y Periodic table calcium ← scandium → titanium
Panagway
silvery white
Kinatibuk-ang mga kinaiya
Ngalan, simbolo, kaiphan	scandium, Sc, 21
Paglitok	/ˈskændiəm/ [[Help:Pronunciation respelling key|Plantilya:Smallcaps all-dee-əm]]
Kategoriyang elemento	puthaw nga transisyon
Group, period, block	3, 4, d
Gibug-aton sa atomo	44.955912(6)
Kontorno sa elektron	[Ar] 3d1 4s2 2, 8, 9, 2
History
Prediction	Dmitri Mendeleev (1871)
Pagkadiskobre	Lars Fredrik Nilson (1879)
First isolation	Lars Fredrik Nilson (1879)
Physical properties
Phase	magahi
Density (near r.t.)	2.985 g·cm−3
Liquid density at m.p.	2.80 g·cm−3
Melting point	1814 K, 1541 °C, 2806 °F
Boiling point	3109 K, 2836 °C, 5136 °F
Heat of fusion	14.1 kJ·mol−1
Heat of vaporization	332.7 kJ·mol−1
Molar heat capacity	25.52 J·mol−1·K−1
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 1645 1804 (2006) (2266) (2613) (3101)
Atomic properties
Oxidation states	3, 2[1], 1[2] (amphoteric oxide)
Electronegativity	1.36 (Pauling scale)
Ionization energies (more)	1st: 633.1 kJ·mol−1
	2nd: 1235.0 kJ·mol−1
	3rd: 2388.6 kJ·mol−1
Atomic radius	162 pm
Covalent radius	170±7 pm
Van der Waals radius	211 pm
Miscellanea
Crystal structure	hexagonal
Magnetic ordering	paramagnetic
Electrical resistivity	(r.t.) (α, poly) calc. 562 nΩ·m
Thermal conductivity	15.8 W·m−1·K−1
Thermal expansion	(r.t.) (α, poly) 10.2 µm/(m·K)
Young's modulus	74.4 GPa
Shear modulus	29.1 GPa
Bulk modulus	56.6 GPa
Poisson ratio	0.279
Brinell hardness	750 MPa
CAS registry number	7440-20-2
Most stable isotopes
Main article: Isotopes of scandium
iso NA half-life DM DE (MeV) DP 44m2Sc syn 58.61 h IT 0.2709 44Sc γ 1.0, 1.1, 1.1 44Sc ε - 44Ca 45Sc 100% 45Sc is stable with 24 neutrons 46Sc syn 83.79 d β− 0.3569 46Ti γ 0.889, 1.120 - 47Sc syn 3.3492 d β− 0.44, 0.60 47Ti γ 0.159 - 48Sc syn 43.67 h β− 0.661 48Ti γ 0.9, 1.3, 1.0 -
t h u · r

Ang eskandyo (Iningles scandium) mao ang elementong kimiko sa talaang peryodiko nga may simbolo nga Sc ug kaiphan nga atomik 21. Ang eskandyo mao ang puthaw nga transisyon.

Ang mga gi basihan niini

1. ↑ McGuire, Joseph C. (1960). "Preparation and Properties of Scandium Dihydride". Journal of Chemical Physics. 33: 1584–1585. Bibcode:1960JChPh..33.1584M. doi:10.1063/1.1731452. Unknown parameter |coauthor= ignored (|author= suggested) (help)
2. ↑ Smith, R. E. (1973). "Diatomic Hydride and Deuteride Spectra of the Second Row Transition Metals". Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences. 332 (1588): 113–127. Bibcode:1973RSPSA.332..113S. doi:10.1098/rspa.1973.0015.

Galeriya sa hulagway