Cesium is used in atomic clocks and more recently in ion propulsion systems. Caesium (nach IUPAC) [ˈʦɛːzi̯ʊm] anhören? Symbol: Cs. It has thirty-nine known isotopes, having atomic masses ranging from 112 to 151. ›› Cesium molecular weight. The following points highlight the applications or uses of the Cesium: Cesium formate-based drilling liquids are widely utilized in the extractive oil industry. Eldigo Press, Palisades, NY). The mass of a cesium (Cs, atomic number 55) atom is 2.21×10−25 kg, and its radius is R = 2.65×10−10 m. The mass of the atomic nucleus roughly equals the mass of the whole atom. Number of Neutrons: 78. Therefore, Cs-137 has 82 neutrons and Cs-134 has 79 neutrons. The average atomic mass is the weighted average of all the isotopes of an element. Answer: 0.75 x 133 = 99.75 0.20 x 132 = 26.4 0.05 x 134 = 6.7 Total = 132.85 amu = average atomic mass a. How did the work of Dmitri Mendeleev differ from that of John Newlands in the development of the periodic table? We assume no responsibility for consequences which may arise from the use of information from this website. The name of this chemical element is derived from a Latin word meaning blue flames which can be seen when this element burns. They looked and found blue lines in the mineral water. Symbol. CESIUM:- (Cs) , ATOMIC NO. Caesium boiling point is 690 °C. The most common use of this element is producing so called Caesium clock, which is an atomic clock with extre… Caesium has no biological importance and in its pure form is not toxic or poisonous. Caesiumis a soft metal of yellowish color, which is very highly reactive and can explode in water. Calculate the fraction of the volume occupied by the nucleus in a cesium atom. Atomic Mass: 132.90546 amu. If you want to get in touch with us, please do not hesitate to contact us via e-mail: The information contained in this website is for general information purposes only. Relative atomic mass (A r): 132.90545196 (6) ... Caesium is known as cesium in the USA. The chemical symbol for Caesium is Cs. #thinkingpriesthood https://t.co/lBkTaakiYb Cesium is also used in atomic clocks, in photoelectric cells and as a catalyst in the hydrogenation of certain organic compounds. The electron configuration of cesium is [Xe] 6s1. 55. Cesium has an atomic mass of 132.90545 u. Cesium -112 through 132 and 134 through 148 are artificially produced and are radioactive (2). Answer: 0.75 x 133 = 99.75 + 0.20 x 132 = 26.4 + 0.05 x 134 = 6.7 (Add together) Total = 132.85 amu = average atomic mass Molar mass of Cs = 132.90545 g/mol. In addition, t… Name: Cesium Symbol: Cs Atomic Number: 55 Atomic Mass: 132.90546 amu Number of Protons/Electrons: 55 Number of Neutrons: 78 Date of Discovery: 1860 Discoverer: Fustov Kirchoff Uses: removes air traces in vacuum tubes Classification: Alkali Metal Molecular weight calculation: 132.90545*2 + 15.9994 ›› Percent composition by element One atom of cesium has a mass of 132.9054 amu, and one mole of cesium has a mass of 132.9054 grams, so five moles of cesium has a mass of 664.527 grams.Multiplying the mass of … Robert Wilhelm Bunsen. Its atomic number is 55 and has a single electron in its outermost s-orbital. Element 55 of Periodic table is Cesium with atomic number 55, atomic weight 132.90545. It was calculated from the global average river input. Cesium (Cs) Atomic Data for Cesium (Cs) Atomic Number = 55 Atomic Weight = 132.9054 Reference E95 : Isotope : Mass : Abundance : Spin : Mag Moment : 133 Cs: 132.905429: 100%: 7/2 +2.579: Cs I Ground State 1s 2 2s 2 2p 6 3s 2 3p 6 3d 1 0 4s 2 4p 6 4d 1 0 5s 2 5p 6 6s 2 S 1 / 2 Ionization energy 31406.46769 cm-1 (3.893905 eV) Ref. Phase at room temperature: solid 6. Compound: Moles: Weight, g: Cs: Elemental composition of Cs. Also Know, what is the mass of 5 mol of cesium? The unit of measure for mass is the atomic mass unit (amu). State at 20 0 C. Solid. LP16811-9 Cesium Caesium (also spelled cesium) is a chemical element in the periodic table that has the symbol Cs and atomic number 55. der 1. For other isotopes, the isotopic mass usually differs and is usually within 0.1 u of the mass number. Atomic Mass of Caesium Atomic mass of Caesium is 132.9055 u. A German scientist who help discover Cesium while examining mineral water. Cesium isotopes are from atomic mass of 112-148, so there are 36 of them including Cs-133, regular cesium. The gram atomic mass of cesium is 132.905 and that of nitrogen is 14.0067. These are: These will be explained one by one as follows: The physical properties of Cesium are as follows: It is a delicate, silvery- gold alkali element. Caesiumis a soft metal of yellowish color, which is very highly reactive and can explode in water. Atomic cesium is employed in the world’s time standard, the cesium clock. Atomic symbol (on the periodic table of elements): Cs 3. For many years it was also spelled caesium, but it was pronounced the same. The gram atomic mass of cesium is 132.905 and that of nitrogen is 14.0067. 1. Atomic Data for Cesium (Cs) Atomic Number = 55. at 0℃ and one atmosphere pressure. Atomic structure of Cesium includes atomic number, atomic weight, electron configuration These atoms differ in the number of neutrons. Atomic mass. IUPAC-Gruppe und gehört zu den Alkalimetallen.Caesium ist das schwerste stabile Alkalimetall. Boiling point of Caesium in Kelvin is 944 K. Caesium melting point is 28,4 °C. Thus, since the atomic mass of iron is 55.847 amu, one mole of iron atoms would weigh 55.847 grams. 1) You may use almost everything for non-commercial and educational use. The Standard English unit is pounds mass per cubic foot (lbm/ft3). = 55 , ATOMIC MASS = 132.90543(5) , MELTING POINT (C)= 28.40±0.01 , BOILING POINT (C) = 669.3FRANCIUM:- Francium is a chemical elemen… On the atomic scale, physicists have found that quantum mechanics describes things very well on that scale. The Sea ( Broecker, W. S. and Peng, T.-H., 1982 ( on the periodic?. And Kir… which property would cesium most likely have distribute or commercially exploit the content, on... In the extractive oil industry element symbol Cs and atomic number 55 which means there are 52 isotopes and abundance! 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