Ang tansan (Iningles: tin , Kinatsila: estaño , Tinagalog: tanso ) mao ang elementong kemikal sa periodic table nga may simbolo nga Sn (Linatin: stannum ) ug numerong atomiko nga 50. Ang daw-silver , maleyable nga puthaw nga dili dayon ma-oksidays sa hangin ug dili matayaan makit-an sa daghang aloy ug gigamit sa pag-koting (coating ) sa ubang puthaw. Ang tansan naggikan sa mineral nga cassiterite, isip usa ka oksayd (oxide ). Mahimong bronse kini kon ialoy sa kopre.
Quick Facts Tin, Panagway ...
Tin
50
Panagway
silvery (left, beta) or gray (right, alpha)
Kinatibuk-ang mga kinaiya
Ngalan, simbolo , kaiphan
tin, Sn, 50
Paglitok
Kategoriyang elemento post-transition metal
Group , period , block 14 , 5 , p
Gibug-aton sa atomo 118.710
Kontorno sa elektron [ Kr ] 4d10 5s2 5p2 Electron shells of tin (2, 8, 18, 18, 4)
History
Pagkadiskobre around 3500 BC
Physical properties
Phase solid
Density (near r.t. )(white) 7.365 g·cm−3
Density (near r.t. )(gray) 5.769 g·cm−3
Liquid density at m.p.
6.99 g·cm−3
Melting point 505.08 K , 231.93 °C, 449.47 °F
Boiling point 2875 K, 2602 °C, 4716 °F
Heat of fusion (white) 7.03 kJ·mol−1
Heat of vaporization (white) 296.1 kJ·mol−1
Molar heat capacity (white) 27.112 J·mol−1 ·K−1
Vapor pressure
P (Pa)
1
10
100
1 k
10 k
100 k
at T (K)
1497
1657
1855
2107
2438
2893
Atomic properties
Oxidation states 4 , 2, -4 (amphoteric oxide)
Electronegativity 1.96 (Pauling scale)
Ionization energies 1st: 708.6 kJ·mol−1
2nd: 1411.8 kJ·mol−1
3rd: 2943.0 kJ·mol−1
Atomic radius 140 pm
Covalent radius 139±4 pm
Van der Waals radius 217 pm
Miscellanea
Crystal structure tetragonal
white
diamond cubic
gray
Magnetic ordering (gray) diamagnetic [ 1] paramagnetic
Electrical resistivity (0 °C) 115 nΩ·m
Thermal conductivity 66.8 W·m−1 ·K−1
Thermal expansion (25 °C) 22.0 µm·m−1 ·K−1
Speed of sound (thin rod)(r.t. ) (rolled) m·s−1
Young's modulus 50 GPa
Shear modulus 18 GPa
Bulk modulus 58 GPa
Poisson ratio 0.36
Mohs hardness 1.5
Brinell hardness ~350 MPa
CAS registry number 7440-31-5
Most stable isotopes
Main article: Isotopes of tin
iso NA half-life DM DE (MeV ) DP
112 Sn0.97%
112 Sn is stable with 62 neutrons
114 Sn0.66%
114 Sn is stable with 64 neutrons
115 Sn0.34%
115 Sn is stable with 65 neutrons
116 Sn14.54%
116 Sn is stable with 66 neutrons
117 Sn7.68%
117 Sn is stable with 67 neutrons
118 Sn24.22%
118 Sn is stable with 68 neutrons
119 Sn8.59%
119 Sn is stable with 69 neutrons
120 Sn32.58%
120 Sn is stable with 70 neutrons
122 Sn4.63%
122 Sn is stable with 72 neutrons
124 Sn5.79%
>1×1017 y
β− β− 2.2870
124 Te
126 Sntrace 2.3×105 y
β− 0.380
126 Sb
· r
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