Thepa ea Molybdenum
| Nomoro ea athomo | 42 |
| Nomoro ea CAS | 7439-98-7 |
| Boima ba athomo | 95.94 |
| Sebaka se qhibilihang | 2620°C |
| Ntho e belang | 5560°C |
| Bophahamo ba athomo | 0.0153 nm3 |
| Boima ba 20 ° C | 10.2g/cm³ |
| Sebopeho sa kristale | dikubiki tse shebaneng le mmele |
| Lattice kamehla | 0.3147 [nm] |
| Bongata bo karolong e ka holimo ea Lefatše | 1.2 [g/t] |
| Lebelo la modumo | 5400 m/s (ho rt)(thupa e tšesaane) |
| Katoloso ea mocheso | 4.8 µm/(m·K) (ho 25 °C) |
| Thermal conductivity | 138 W/(m·K) |
| Restivity ea motlakase | 53.4 nΩ·m (ho 20 °C) |
| Mohs boima | 5.5 |
| Vickers thata | 1400-2740Mpa |
| Ho thatafala ha Brinell | 1370-2500Mpa |
Molybdenum ke ntho ea lik’hemik’hale e nang le letšoao la Mo le nomoro ea athomo ea 42. Lebitso lena le tsoa ho Neo-Latin molybdaenum, ho tsoa ho Segerike sa Boholo-holo Μόλυβδος molybdos, e bolelang loto, kaha ore ea eona e ne e ferekanngoa le tšepe ea loto. Liminerale tsa Molybdenum li 'nile tsa tsebahala ho pholletsa le histori, empa elemente e ile ea sibolloa (ka kutloisiso ea ho e khetholla e le ntho e ncha ho tsoa ho letsoai la liminerale tsa tšepe tse ling) ka 1778 ke Carl Wilhelm Scheele. Tšepe e ile ea aroloa ka lekhetlo la pele ka 1781 ke Peter Jacob Hjelm.
Molybdenum ha e hlahe ka tlhaho e le tšepe e sa lefelloeng Lefatšeng; e fumaneha feela libakeng tse fapaneng tsa oxidation ka liminerale. Ntho e sa lefelloeng, tšepe ea silevera e nang le grey cast, e na le ntlha ea botšelela e phahameng ka ho fetisisa ea ho qhibiliha hoa ntho leha e le efe. E etsa habonolo li-carbide tse thata, tse tsitsitseng ka li-alloys, 'me ka lebaka lena boholo ba tlhahiso ea lefats'e ea element (hoo e ka bang 80%) e sebelisoa ka li-alloys tsa tšepe, ho kenyelletsa le li-alloys tse matla le li-superalloys.
Metsoako e mengata ea molybdenum e na le ho qhibiliha ha tlaase metsing, empa ha liminerale tse nang le molybdenum li kopana le oksijene le metsi, molybdate ion MoO2-4 e hlahisoang e ka qhibiliha. Liindastering, metsoako ea molybdenum (hoo e ka bang 14% ea tlhahiso ea lefats'e ea element) e sebelisoa ka likhatello tse phahameng le mocheso o phahameng joaloka li-pigments le li-catalysts.
Li-enzyme tse nang le molybdenum ke tsona tse atileng haholo tsa baktheria bakeng sa ho pshatla maqhama a lik'hemik'hale ho naetrojene ea molek'hule ea sepakapaka nakong ea ho lokisa naetrojene ea baeloji. Bonyane li-enzyme tse 50 tsa molybdenum li se li tsejoa libaktheria, limela le liphoofolo, le hoja ke li-enzyme tsa baktheria le cyanobacteria feela tse amehang ho lokiseng naetrojene. Li-nitrogenase tsena li na le molybdenum ka sebopeho se fapaneng le li-enzyme tse ling tsa molybdenum, tseo kaofela li nang le molybdenum e nang le oxidized ka botlalo ka har'a cofactor ea molybdenum. Li-enzyme tsena tse sa tšoaneng tsa molybdenum cofactor li bohlokoa ho lintho tse phelang, ’me molybdenum ke ntho ea bohlokoa bakeng sa bophelo linthong tsohle tse phahameng tsa eukaryote, le hoja e se libaktheria tsohle.
Lintho tsa 'mele
Ka sebōpeho sa eona se hloekileng, molybdenum ke tšepe ea silevera-grey e nang le boima ba Mohs ba 5.5, le boima bo tloaelehileng ba athomo ea 95.95 g/mol. E na le sebaka se qhibilihang sa 2,623 °C (4,753 °F); ea lintho tse hlahang ka tlhaho, ke tantalum, osmium, rhenium, tungsten le carbon feela tse nang le lintlha tse phahameng tsa ho qhibiliha. E na le e 'ngoe ea li-coefficients tse tlaase ka ho fetisisa tsa katoloso ea mocheso har'a litšepe tse sebelisoang khoebong. Matla a matla a lithapo tsa molybdenum a eketseha ka makhetlo a ka bang 3, ho tloha ho 10 ho isa ho 30 GPa, ha bophara ba bona bo fokotseha ho tloha ~ 50-100 nm ho ea ho 10 nm.
Lintho tsa lik'hemik'hale
Molybdenum ke tšepe ea phetoho e nang le electronegativity ea 2.16 sekaleng sa Pauling. Ha e sebetsane le oksijene kapa metsi ka mocheso oa kamore. Oxidation e fokolang ea molybdenum e qala ho 300 °C (572 °F); bongata ba oxidation bo etsahala mochesong o ka holimo ho 600 ° C, ho fella ka molybdenum trioxide. Joalo ka litšepe tse ngata tse boima tsa phetoho, molybdenum e bonts'a tšekamelo e nyane ea ho theha cation ka tharollo ea metsi, le hoja cation ea Mo3 + e tsejoa tlas'a maemo a laoloang ka hloko.
Lihlahisoa tse chesang tsa Molybdenum
