Tin, 50 Tin Ìhànsójú silvery lustrous gray Ìwúwo átọ̀mù A r, std (Sn) 118.710(7) Tin ní orí tábìlì àyè Nọ́mbà átọ̀mù (Z ) 50 Ẹgbẹ́ group 14 (carbon group) Àyè àyè 5 Àdìpọ̀ Àdìpọ̀-p Ẹ̀ka ẹ́límẹ́ntì Post-transition metalÌtò ẹ̀lẹ́ktrọ́nù [Kr ] 4d10 5s2 5p2 Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan 2, 8, 18, 18, 4 Àwọn ohun ìní ara Ìfarahàn at STP solid Ìgbà ìyọ́ 505.08 K (231.93 °C, 449.47 °F) Ígbà ìhó 2875 K (2602 °C, 4716 °F) Kíki (near r.t. ) (white) 7.365 g/cm3 3 when liquid (at m.p. ) 6.99 g/cm3 Heat of fusion (white) 7.03 kJ/mol Heat of (white) 296.1 kJ/mol Molar heat capacity (white) 27.112 J/(mol·K) 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 Electronegativity Pauling scale: 1.96 Atomic radius empirical: 140 pm Covalent radius 139±4 pm Van der Waals radius 217 pm Color lines in a spectral range Spectral lines of tin Other properties Natural occurrence primordial Crystal structure Tetragonal (white), diamond cubic (gray) Thermal expansion 22.0 µm/(m·K) (at 25 °C) Thermal conductivity 66.8 W/(m·K) Electrical resistivity 115 n Ω·m (at 0 °C) Magnetic ordering (gray)diamagnetic, (white) paramagnetic Young's modulus 50 GPa Shear modulus 18 GPa Bulk modulus 58 GPa Poisson ratio 0.36 Mohs hardness 1.5 Brinell hardness 51 MPa CAS Number 7440-31-5 Main isotopes of tin Isotope Abundance Half-life (t 1/2 ) Decay mode Product 112 Sn 0.97% 112 Sn is stable with 62 neutrons 114 Sn 0.66% 114 Sn is stable with 64 neutrons 115 Sn 0.34% 115 Sn is stable with 65 neutrons 116 Sn 14.54% 116 Sn is stable with 66 neutrons 117 Sn 7.68% 117 Sn is stable with 67 neutrons 118 Sn 24.22% 118 Sn is stable with 68 neutrons 119 Sn 8.59% 119 Sn is stable with 69 neutrons 120 Sn 32.58% 120 Sn is stable with 70 neutrons 122 Sn 4.63% 122 Sn is stable with 72 neutrons 124 Sn 5.79% 124 Sn is stable with 74 neutrons 126 Sn trace 2.3×105 y β− 0.380 126 Sb
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