รูบิเดียม (อังกฤษ: Rubidium) คือธาตุที่มีหมายเลขอะตอม 37 และสัญลักษณ์คือ Rb รูบิเดียมอยู่ในตารางธาตุหมู่ 1 รูบิเดียมเป็นธาตุในกลุ่มโลหะแอลคาไล มีสีขาวเงินเนื้ออ่อน Rb-87 เป็นไอโซโทปเรดิโอแอคตีฟที่เกิดขึ้นเองตามธรรมชาติ สามารถติดไฟได้เองในอากาศ
รูบิเดียม | |||||||||||||||
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Pronunciation | /ruːˈbɪdiəm/ | ||||||||||||||
Appearance | grey white | ||||||||||||||
Standard atomic weight Ar°(Rb) | |||||||||||||||
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รูบิเดียม in the periodic table | |||||||||||||||
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Group | group 1: hydrogen and alkali metals | ||||||||||||||
Period | period 5 | ||||||||||||||
[Kr] 5s1 | |||||||||||||||
Electrons per shell | 2, 8, 18, 8, 1 | ||||||||||||||
Physical properties | |||||||||||||||
at STP | ของแข็ง | ||||||||||||||
Melting point | 312.46 K (39.31 °C, 102.76 °F) | ||||||||||||||
Boiling point | 961 K (688 °C, 1270 °F) | ||||||||||||||
Density (near r.t.) | 1.532 g/cm3 | ||||||||||||||
when liquid (at m.p.) | 1.46 g/cm3 | ||||||||||||||
(extrapolated) 2093 K, 16 MPa | |||||||||||||||
Heat of fusion | 2.19 | ||||||||||||||
75.77 kJ/mol | |||||||||||||||
31.060 J/(mol·K) | |||||||||||||||
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Atomic properties | |||||||||||||||
−1, +1 (a strongly basic oxide) | |||||||||||||||
Electronegativity | Pauling scale: 0.82 | ||||||||||||||
empirical: 248 | |||||||||||||||
220±9 pm | |||||||||||||||
303 pm | |||||||||||||||
Spectral lines of รูบิเดียม | |||||||||||||||
Other properties | |||||||||||||||
Natural occurrence | primordial | ||||||||||||||
รูปลูกบาศก์กลางตัว | |||||||||||||||
thin rod | 1300 m/s (at 20 °C) | ||||||||||||||
58.2 W/(m⋅K) | |||||||||||||||
128 n Ω⋅m (at 20 °C) | |||||||||||||||
Magnetic ordering | |||||||||||||||
2.4 GPa | |||||||||||||||
2.5 GPa | |||||||||||||||
0.3 | |||||||||||||||
0.216 MPa | |||||||||||||||
7440-17-7 | |||||||||||||||
History | |||||||||||||||
โรเบิร์ต บุนเซน and Gustav Kirchhoff (1861) | |||||||||||||||
First isolation | |||||||||||||||
Template:infobox รูบิเดียม isotopes does not exist | |||||||||||||||
อ้างอิง
- "Standard Atomic Weights: Rubidium". . 1969.
- Magnetic susceptibility of the elements and inorganic compounds, in Handbook of Chemistry and Physics 81st edition, CRC press.
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rubiediym xngkvs Rubidium khuxthatuthimihmayelkhxatxm 37 aelasylksnkhux Rb rubiediymxyuintarangthatuhmu 1 rubiediymepnthatuinklumolhaaexlkhail misikhawenginenuxxxn Rb 87 epnixosothperdioxaexkhtifthiekidkhunexngtamthrrmchati samarthtidifidexnginxakasrubiediym 00RbrubiediymPronunciation r uː ˈ b ɪ d i e m wbr roo BID ee em Appearancegrey whiteStandard atomic weight Ar Rb 85 4678 0 000385 468 0 001 abridged rubiediym in the periodic tableHydrogen HeliumLithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine NeonSodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine ArgonPotassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine KryptonRubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine XenonCaesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury element Thallium Lead Bismuth Polonium Astatine RadonFrancium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson K Rb Cskhripthxn rubiediym strxnesiymGroupgroup 1 hydrogen and alkali metalsPeriodperiod 5 Kr 5s1Electrons per shell2 8 18 8 1Physical propertiesat STPkhxngaekhngMelting point312 46 K 39 31 C 102 76 F Boiling point961 K 688 C 1270 F Density near r t 1 532 g cm3when liquid at m p 1 46 g cm3 extrapolated 2093 K 16 MPaHeat of fusion2 19 75 77 kJ mol31 060 J mol K P Pa 1 10 100 1 k 10 k 100 kat T K 434 486 552 641 769 958Atomic properties 1 1 a strongly basic oxide ElectronegativityPauling scale 0 82empirical 248 220 9 pm303 pmColor lines in a spectral rangeSpectral lines of rubiediymOther propertiesNatural occurrenceprimordial ruplukbaskklangtwruplukbaskklangtw crystal structure for rubiediymthin rod1300 m s at 20 C 58 2 W m K 128 n W m at 20 C Magnetic ordering2 4 GPa2 5 GPa0 30 216 MPa7440 17 7Historyorebirt bunesn and Gustav Kirchhoff 1861 First isolationkTemplate infobox rubiediym isotopes does not exist aek xangxing Standard Atomic Weights Rubidium 1969 Magnetic susceptibility of the elements and inorganic compounds in Handbook of Chemistry and Physics 81st edition CRC press bthkhwamekhminiyngepnokhrng khunsamarthchwywikiphiediyidodykarephimetimkhxmuldkhk