عمومي خواص Pronunciation / ˈ t ʌ ŋ s t ən / / ˈ w ʊ l f r əm / TUNG WUUL Alternative name wolfram Appearance grayish white, lustrous Tungsten پهدوراني جدول کې اټومي شمیره (Z ) 74 گروپ ,پیریود group 6 period 6 بلاک d-block Element category transition metal معياري اټومي وزن (A r ) کينډۍ:Val [ ۱] Electron configuration [Xe ] 4f14 5d4 6s2 [ ۲] Electrons per shell
2, 8, 18, 32, 12, 2 فزیکي خواص حالت (at STP) جامد دويلې کيدو ټکى 3695 K (3422 °C, 6192 °F) يشنا ټکی 6203 K (5930 °C, 10706 °F) Density near r.t. 19.25 g/cm3 when liquid, at m.p. 17.6 g/cm3 Heat of fusion 52.31 kJ/mol [ ۳] [ ۴] Heat of vaporization 774 kJ/mol Molar heat capacity 24.27 J/(mol·K) Vapor pressure P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 3477 3773 4137 4579 5127 5823
اټومي خواص Oxidation states 6 , 5,4 , 3, 2, 1, 0, −1, −2, −4acidic oxide)Electronegativity Pauling scale: 2.36 Ionization energies 1st: 770 kJ/mol 2nd: 1700 kJ/mol Atomic radius empirical: 139 pm Covalent radius 162±7 pm Miscellanea Crystal structure body-centered cubic (bcc)Body-centered cubic crystal structure for tungsten Speed of sound thin rod 4620 m/s (at r.t.) (annealed) Thermal expansion 4.5 µm/(m·K) (at 25 °C) د تودوخې تېرېدنه 173 W/(m·K) Electrical resistivity 52.8 nΩ·m (at 20 °C) Magnetic ordering paramagnetic [ ۵] Magnetic susceptibility (χ mol ) +59.0·10−6 cm3 /mol (298 K)[ ۶] Young's modulus 411 GPa Shear modulus 161 GPa Bulk modulus 310 GPa Poisson ratio 0.28 Mohs hardness 7.5 Vickers hardness 3430–4600 MPa Brinell hardness 2000–4000 MPa CAS Number 7440-33-7 History Discovery Carl Wilhelm Scheele (1781) First isolation Juan José Elhuyar andFausto Elhuyar (1783) Named by Torbern Bergman (1781) Mainisotopes of tungsten | references | in Wikidata 
