သယ်သီယမ်,  55Cs
Some pale gold metal, with a liquid-like texture and lustre, sealed in a glass ampoule
Spectral lines of caesium
ကအောဝ်ႏလုဲင်ႏဒါႏ ဂုဏ်သတ္တိဖုံႏ
အမဉ်ꩻ၊ သင်္ကေတသယ်သီယမ်, Cs
အငေါဝ်းထန်ႏ/ˈsziəm/
SEE -zee-əm
အမဉ်ꩻလောင်းလင်cesium (US, informal)
အယောင်ꩻpale gold
ဒြတ်စင် အထဲ့ရော့ꩻ ထာꩻရှောင်ကို သယ်သီယမ်
Element 1: Hydrogen (H), Other non-metal
Element 2: Helium (He), Noble gas
Element 3: Lithium (Li), Alkali metal
Element 4: Beryllium (Be), Alkaline earth metal
Element 5: Boron (B), Metalloid
Element 6: Carbon (C), Other non-metal
Element 7: Nitrogen (N), Other non-metal
Element 8: Oxygen (O), Other non-metal
Element 9: Fluorine (F), Halogen
Element 10: Neon (Ne), Noble gas
Element 11: Sodium (Na), Alkali metal
Element 12: Magnesium (Mg), Alkaline earth metal
Element 13: Aluminium (Al), Other metal
Element 14: Silicon (Si), Metalloid
Element 15: Phosphorus (P), Other non-metal
Element 16: Sulfur (S), Other non-metal
Element 17: Chlorine (Cl), Halogen
Element 18: Argon (Ar), Noble gas
Element 19: Potassium (K), Alkali metal
Element 20: Calcium (Ca), Alkaline earth metal
Element 21: Scandium (Sc), Transition metal
Element 22: Titanium (Ti), Transition metal
Element 23: Vanadium (V), Transition metal
Element 24: Chromium (Cr), Transition metal
Element 25: Manganese (Mn), Transition metal
Element 26: Iron (Fe), Transition metal
Element 27: Cobalt (Co), Transition metal
Element 28: Nickel (Ni), Transition metal
Element 29: Copper (Cu), Transition metal
Element 30: Zinc (Zn), Transition metal
Element 31: Gallium (Ga), Other metal
Element 32: Germanium (Ge), Metalloid
Element 33: Arsenic (As), Metalloid
Element 34: Selenium (Se), Other non-metal
Element 35: Bromine (Br), Halogen
Element 36: Krypton (Kr), Noble gas
Element 37: Rubidium (Rb), Alkali metal
Element 38: Strontium (Sr), Alkaline earth metal
Element 39: Yttrium (Y), Transition metal
Element 40: Zirconium (Zr), Transition metal
Element 41: Niobium (Nb), Transition metal
Element 42: Molybdenum (Mo), Transition metal
Element 43: Technetium (Tc), Transition metal
Element 44: Ruthenium (Ru), Transition metal
Element 45: Rhodium (Rh), Transition metal
Element 46: Palladium (Pd), Transition metal
Element 47: Silver (Ag), Transition metal
Element 48: Cadmium (Cd), Transition metal
Element 49: Indium (In), Other metal
Element 50: Tin (Sn), Other metal
Element 51: Antimony (Sb), Metalloid
Element 52: Tellurium (Te), Metalloid
Element 53: Iodine (I), Halogen
Element 54: Xenon (Xe), Noble gas
Element 55: Caesium (Cs), Alkali metal
Element 56: Barium (Ba), Alkaline earth metal
Element 57: Lanthanum (La), Lanthanoid
Element 58: Cerium (Ce), Lanthanoid
Element 59: Praseodymium (Pr), Lanthanoid
Element 60: Neodymium (Nd), Lanthanoid
Element 61: Promethium (Pm), Lanthanoid
Element 62: Samarium (Sm), Lanthanoid
Element 63: Europium (Eu), Lanthanoid
Element 64: Gadolinium (Gd), Lanthanoid
Element 65: Terbium (Tb), Lanthanoid
Element 66: Dysprosium (Dy), Lanthanoid
Element 67: Holmium (Ho), Lanthanoid
Element 68: Erbium (Er), Lanthanoid
Element 69: Thulium (Tm), Lanthanoid
Element 70: Ytterbium (Yb), Lanthanoid
Element 71: Lutetium (Lu), Lanthanoid
Element 72: Hafnium (Hf), Transition metal
Element 73: Tantalum (Ta), Transition metal
Element 74: Tungsten (W), Transition metal
Element 75: Rhenium (Re), Transition metal
Element 76: Osmium (Os), Transition metal
Element 77: Iridium (Ir), Transition metal
Element 78: Platinum (Pt), Transition metal
Element 79: Gold (Au), Transition metal
Element 80: Mercury (Hg), Transition metal
Element 81: Thallium (Tl), Other metal
Element 82: Lead (Pb), Other metal
Element 83: Bismuth (Bi), Other metal
Element 84: Polonium (Po), Metalloid
Element 85: Astatine (At), Halogen
Element 86: Radon (Rn), Noble gas
Element 87: Francium (Fr), Alkali metal
Element 88: Radium (Ra), Alkaline earth metal
Element 89: Actinium (Ac), Actinoid
Element 90: Thorium (Th), Actinoid
Element 91: Protactinium (Pa), Actinoid
Element 92: Uranium (U), Actinoid
Element 93: Neptunium (Np), Actinoid
Element 94: Plutonium (Pu), Actinoid
Element 95: Americium (Am), Actinoid
Element 96: Curium (Cm), Actinoid
Element 97: Berkelium (Bk), Actinoid
Element 98: Californium (Cf), Actinoid
Element 99: Einsteinium (Es), Actinoid
Element 100: Fermium (Fm), Actinoid
Element 101: Mendelevium (Md), Actinoid
Element 102: Nobelium (No), Actinoid
Element 103: Lawrencium (Lr), Actinoid
Element 104: Rutherfordium (Rf), Transition metal
Element 105: Dubnium (Db), Transition metal
Element 106: Seaborgium (Sg), Transition metal
Element 107: Bohrium (Bh), Transition metal
Element 108: Hassium (Hs), Transition metal
Element 109: Meitnerium (Mt), Transition metal
Element 110: Darmstadtium (Ds), Transition metal
Element 111: Roentgenium (Rg), Transition metal
Element 112: Copernicium (Cn), Transition metal
Element 113: Ununtrium (Uut)
Element 114: Ununquadium (Uuq)
Element 115: Ununpentium (Uup)
Element 116: Ununhexium (Uuh)
Element 117: Ununseptium (Uus)
Element 118: Ununoctium (Uuo)
Rb

Cs

Fr
သီနွန်သယ်သီယမ်ဘယ်ရီယမ်
အဲက်တမ် အမုဲင်ရဲန်ႏ (Z)55
အဗူႏဘလော့group 1: hydrogen and alkali metals
အထဲ့ရော့ꩻ ထာꩻရွောင်period  6
ဒြပ်စင် ကဏ္ဍ  အယ်လ်ကာလီသတ္တု
အှောန်ႏထော့ခါꩻ အဲက်တမ်မေက် အထှူႏခေန်ႏ (±) (Ar)132.90545196(6)[]
အီလဲက္ထရွန် ကဖျင်ထာꩻ[Xe] 6s1
အပီတထွိုင်ကို ကပါဒါႏ အီလဲက္ထရွန်2, 8, 18, 18, 8, 1
ပှိုင်းဝှို့တုမ်ႏ ယောင်ꩻဖဲ့ဂုဏ်သတ္တိဖုံႏ
ဖေ့စ်အခြုံးအတူႏ
အခြုံးခြီအီအလျား301.7 K ​(28.5 °C, ​83.3 °F)
အထီဗို့ꩻအီအလျား944 K ​(671 °C, ​1240 °F)
အနဲန်းအတဉ်ႏ (အခန်ꩻအလျား ၊ လမ်းဟောင်းကိုအလျား)1.93 g/cm3
1.843 g/cm3
Critical point1938 K, 9.4 MPa[]
ဖျှူးဆဉ်းအလျား2.09 kJ/mol
အတအှိုထန်ႏအလျား63.9 kJ/mol
မိုလာ အလျားအာႏရဲင်ꩻ32.210 J/(mol·K)
အတအှိုထီတေက်ꩻအာႏ
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 418 469 534 623 750 940
အဲက်တမ်မေက်ဂုဏ်ႏဖုံႏ
ထွာအောက်သုဲက် (အောက်သုဲက်ဒေးဆဉ်း) အထျꩻအအုံ+1, −1[] ​(a strongly base oxide)
ဓာတ်ငင်ႏအီလက်ထရွန် Pauling scale: 0.79
အာႏတောင်ႏတာႏမာꩻထွာအုဲင်းယွန်း1st: 375.7 kJ/mol
2nd: 2234.3 kJ/mol
3rd: 3400 kJ/mol
အဲက်တမ်မေက် ဒွါႏအကဲန်တကှို့ꩻempirical: 265 pm
ကိုဗေးလဲန့်ဒွါႏအကဲန်တကှို့ꩻ 244±11 pm
ဗန်ဒါဝေါ့သ် ဒွါႏအကဲန်တကှို့ꩻ343 pm
Miscellanea
ကမာꩻထွာခါꩻထာꩻကြုံးbody-centred cubic (bcc)
Bodycentredcubic crystal structure for သယ်သီယမ်
အလျားမာꩻတခြက်ထာꩻ97 µm/(m·K) (at 25 °C)
အလျားတွီကာႏထာꩻ35.9 W/(m·K)
တျာႏရဲးကမ်းထာꩻ205 nΩ·m (at 20 °C)
ပသီႏထှို့ꩻဓာတ်paramagnetic[]
Young's modulus1.7 GPa
Bulk modulus1.6 GPa
Mohs hardness0.2
Brinell hardness0.14 MPa
CAS Number7440-46-2
ထွာလှောန်ခြောင်ꩻ
ကဖေႏအမဉ်ꩻသားလဲတ်တဉ်ဝေါဟာရ caesius မှ။ sky blue, for its spectral colours
ကထုမ်ႏမော့ꩻသားRobert Bunsen and Gustav Kirchhoff (1860)
ဖဖြှဲ့ꩻထန်ႏအရီးသွတ်ꩻလဲင်ႏCarl Setterberg (1882)
အစှူဖြှိုးသွတ်ꩻ သယ်သီယမ်သီး အုဲင်သိုတုပ်ဖုံႏ
iso NA သက်တန်ꩻတာကွို့ꩻ DM DE

( MeV)

DP
133Cs 100% is stable with 78 neutrons
134Cs syn 2.0648 y ε 1.229 134Xe
β 2.059 134Ba
135Cs trace 2.3×106 y β 0.269 135Ba
137Cs syn 30.17 y[] β 1.174 137Ba
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These references will appear in the article, but this list appears only on this page.
  1. Standard Atomic Weights 2013. Commission on Isotopic Abundances and Atomic Weights
  2. Haynes၊ William M., ed. (2011)။ CRC Handbook of Chemistry and Physics (92nd ed.)။ Boca Raton, FL: CRC Press။ p. 4.121။ ISBN 1439855110
  3. Dye, J. L. (1979). "Compounds of Alkali Metal Anions". Angewandte Chemie 18 (8): 587–598. doi:10.1002/anie.197905871. 
  4. "Magnetic susceptibility of the elements and inorganic compounds"။ Handbook of Chemistry and Physics (PDF) (87th ed.)။ CRC press။ ISBN 0-8493-0487-32010-09-26 တွင် ပြန်စစ်ပြီး
  5. NIST Radionuclide Half-Life MeasurementsNIST။ 2011-03-13 ကို ထွားစဲစ်ချာထွူလဲဉ်း။