| Eegenskapen |
| |
| Algemian |
| Nööm, Symbool, Numer | Tseesium, Cs, 55 |
| Seerie | Alkaalimetal |
| Skööl, Periode, Blook | 1, 6, s |
| Klöör, Skak | salwer-witf skürnin, mä sürstoof gul-güül |
| CAS-Numer | 7440-46-2 |
| Uundial | 6,5 ppm |
| Atomaar |
| Atoommase | 132,90545196(6) u |
| Atoomraadius (bereegent) | 265 (298) pm |
| Kovalent-Raadius | 244 pm |
| Van der Waals-Raadius | 343 pm |
| Elektroonen | [Xe] 6s1 |
| Energii | 2,14 eV |
| 1. Ionisiarang | 375,7 kJ/mol |
| Füsikaalisk |
| Tustant | fääst |
| Kristal | kuubisk |
| Sachthaid | 1,90 g/cm3 (20 °C) |
| Hardhaid | 0,2 |
| Magnetismus | paramagneetisk (Χm = 5,2 · 10−6) |
| Smoltponkt | 301,59 K (28,44 °C) |
| Köögponkt | 963,2 K K (690 °C) |
| Molaar Rüm | 70,94 · 10−6 m3/mol |
| Dampwaremk | 66,1 kJ/mol kJ/mol |
| Smoltwaremk | 2,09 kJ/mol |
| Elektrisk struumfeerang | 4,76 · 106 A/(V · m) |
| Waremkfeerang | 36 W/(m · K) |
| Cheemisk |
| Oksidatsionstustant | +1 |
| Oksiiden | Cs2O |
| Sür of baasisk | üs CsOH stark baasisk |
| Normoolpotentiaal | −2,923 V (Cs+ + e− → Cs) |
| Elektronegatiwiteet | 0,79 (Pauling-Skala) |
| Isotoopen |
| Isotoop | NH | t1/2 | Aktiwiteet | Energii (MeV) | Produkt | | 131Cs | {syn.} | 9,689 d | ε | 0,352 | 131Xe | | 132Cs | {syn.} | 6,479 d | ε | 2,120 | 132Xe | | β− | 1,280 | 132Ba | | 133Cs | 100 % | stabiil | | 134Cs | {syn.} | 2,0648 a | β− | 2,059 | 134Ba | | 135Cs | {syn.} | 2,3 · 106 a | β− | 0,2 | 135Ba | | 136Cs | {syn.} | 13,16 d | β− | 2,548 | 136Ba | | 137Cs | {syn.} | 30,17 a | β− | 0,512 (94,6 %) | 137mBa | | β− | 1,176 (5,4 %) | 137Ba | |
| Muar isotoopen bi List faan isotoopen |
| Seekerhaid |
| |
| Miast wurd SI-ianhaiden brükt. |
Tseesium as en cheemisk element mä det ufkörtang Cs (faan Caesium) an det atoomnumer 55. Hat as en alkaalimetal. Hat reagiaret stark mä loft.
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Rian tseesium
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Commonskategorii: Tseesium – Saamlang faan bilen of filmer