Antimonyo

Ang antimonyo (Iningles antimony) mao ang elementong kimiko sa talaang peryodiko nga may simbolo nga Sb ug kaiphan nga atomik 51. Ang antimonyo mao ang metalloid.

Antimony
51Sb
As ↑ Sb ↓ Bi Periodic table tin ← antimony → tellurium
Panagway
silvery lustrous gray
Kinatibuk-ang mga kinaiya
Ngalan, simbolo, kaiphan	antimony, Sb, 51
Paglitok	UK /ˈæntᵻməni/ [[Help:Pronunciation respelling key|Plantilya:Smallcaps all-ti-mə-nee]]; US /ˈæntᵻmoʊni/ [[Help:Pronunciation respelling key|Plantilya:Smallcaps all-ti-moh-nee]]
Kategoriyang elemento	metalloid
Group, period, block	15, 5, p
Gibug-aton sa atomo	121.760(1)
Kontorno sa elektron	[Kr] 4d10 5s2 5p3 2, 8, 18, 18, 5 Electron shells of antimony (2, 8, 18, 18, 5)
History
Pagkadiskobre	3000 BC
First isolation	Vannoccio Biringuccio (1540)
Physical properties
Phase	magahi
Density (near r.t.)	6.697 g·cm−3
Liquid density at m.p.	6.53 g·cm−3
Melting point	903.78 K, 630.63 °C, 1167.13 °F
Boiling point	1860 K, 1587 °C, 2889 °F
Heat of fusion	19.79 kJ·mol−1
Heat of vaporization	193.43 kJ·mol−1
Molar heat capacity	25.23 J·mol−1·K−1
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 807 876 1011 1219 1491 1858
Atomic properties
Oxidation states	5, 3, -3
Electronegativity	2.05 (Pauling scale)
Ionization energies (more)	1st: 834 kJ·mol−1
	2nd: 1594.9 kJ·mol−1
	3rd: 2440 kJ·mol−1
Atomic radius	140 pm
Covalent radius	139±5 pm
Van der Waals radius	206 pm
Miscellanea
Crystal structure	simple trigonal
Magnetic ordering	diamagnetic
Electrical resistivity	(20 °C) 417 nΩ·m
Thermal conductivity	24.4 W·m−1·K−1
Thermal expansion	(25 °C) 11 µm·m−1·K−1
Speed of sound (thin rod)	(20 °C) 3420 m·s−1
Young's modulus	55 GPa
Shear modulus	20 GPa
Bulk modulus	42 GPa
Mohs hardness	3.0
Brinell hardness	294 MPa
CAS registry number	7440-36-0
Most stable isotopes
Main article: Isotopes of antimony
iso NA half-life DM DE (MeV) DP 121Sb 57.36% 121Sb is stable with 70 neutrons 123Sb 42.64% 123Sb is stable with 72 neutrons 125Sb syn 2.7582 y β− 0.767 125Te

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