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rubidium cesium dictionary

Pictures, stories, and facts about the element Rubidium in ...

Rubidium and cesium, which are in the same column of the periodic table and share many of the same chemical properties, are also both used as very high accuracy time standards. A collection of cesium clocks is the current international standard for time. Rubidium clocks are not as accurate, but they are a whole lot cheaper: Functional units can ...

CPC Definition - C01D COMPOUNDS OF ALKALI METALS, i.e ...

C01D 1/00. Oxides or hydroxides of sodium, potassium or alkali metals in general. Definition statement. This place covers: Oxides or hydroxides of sodium or of potassium when claimed per se or the preparation thereof. For example : Preparation by reacting …

Alkali metal Definition & Meaning | Dictionary.com

Alkali metal definition, any of the group of univalent metals including potassium, sodium, lithium, rubidium, cesium, and francium, whose hydroxides are alkalis. See more.

Rubidium | Article about rubidium by The Free Dictionary

Rubidium salts are used in glasses and ceramics. Rubidium-87, a radioactive isotope (half-life about 5 × 10 11 years), makes up about 28% of natural rubidium; the balance is the stable isotope rubidium-85. Fifteen other isotopes are known. Rubidium was discovered with cesium in 1861 by R. W. Bunsen Bunsen, Robert Wilhelm

[Distribution of rubidium, cesium, beryllium, strontium ...

Objective: To investigate the distribution of rubidium (Rb), cesium (Cs), beryllium (Be), strontium (Sr), and barium (Ba) in blood and urine in general Chinese population. Methods: A total of 18 120 subjects aged 6~60 years were enrolled from 24 regions in 8 provinces in Eastern, Central, and Western China from 2009 to 2010 based on the method of cluster random sampling.

alkali metal | Definition, Properties, & Facts | Britannica

alkali metal, any of the six chemical elements that make up Group 1 (Ia) of the periodic table—namely, lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr). The alkali metals are so called because reaction with water forms alkalies (i.e., strong bases capable of neutralizing acids).Sodium and potassium are the sixth and seventh most abundant of the elements ...

caesium - Wiktionary

Jul 23, 2021· The chemical element (symbol Cs) with an atomic number of 55. It is a soft, gold-colored, highly reactive alkali metal.··Alternative spelling of cæsium 2006, Bogen Om Grundstofferne, Gyldendal Uddannelse (→ISBN), page 120 Atomuret er styret af grundstoffet caesium. 2016, Jan Stage, Delfinens smil, Lindhardt og Ringhof (→ISBN) Caesium og plutonium ...

Chemistry for Kids: Elements - Alkali Metals

Sometimes cesium is also spelled "caesium." They like to form salts by combining with halogens. The name "alkali" is derived from the Arabic word for "ashes." Different alkali metals burn with different colored flames including sodium (orange yellow), lithium (red), potassium (lilac), rubidium (red), and cesium (blue or violet).

Caesium Definition & Meaning | Dictionary.com

Caesium definition at Dictionary.com, a free online dictionary with pronunciation, synonyms and translation. Look it up now!

What does rubidium mean?

Definition of rubidium in the Definitions.net dictionary. Meaning of rubidium. What does rubidium mean? ... However, like caesium, rubidium ions are handled by living organisms in a manner similar to potassium ions, being actively taken up by plants and by animal cells. Chambers 20th Century Dictionary (0.00 / 0 votes) Rate this definition:

Selecting a Primary Frequency Standard for a Calibration ...

Figure 2. Long-term performance data (one year) from four rubidium frequency standards. period, whereas a $35,000 cesium will probably be accurate to within a few parts in 1013 or better. However, many cal labs adjust their rubidium standards on a regular basis, and this allows them to maintain average frequency to within a few parts in 1011

Alkali Metals - Chemical Elements, Properties | Alkali ...

A standout amongst the best-known uses of the unadulterated components is the utilization of rubidium and cesium in nuclear timers, of which cesium nuclear tickers are the most precise and exact portrayal of time. A typical use of the compounds of sodium is the sodium-vapor lamp, which emanates light in all efficiency. Table salt, or sodium ...

10 Uses of Rubidium in Everyday Life - AZ Chemistry

May 09, 2018· Rubidium is the second most reactive and very soft metal sequence, with a silvery-white luster. Rubidium was invented (1861) spectroscopically by German scientists Robert Bunsen and Gustav Kirchhoff and named after two prominent red lines of its spectrum. Rubidium and cesium are often found together in nature.

rubidium translation in English | French-English ...

rubidium translation in French - English Reverso dictionary, see also 'rubis',rubicond',rubrique',RU', examples, definition, conjugation

CESIUM | meaning in the Cambridge English Dictionary

cesium definition: 1. US spelling of caesium 2. a chemical element that is a soft, silver-white alkaline metal. Cesium…. Learn more.

Rubidium Definition & Meaning | Dictionary.com

Rubidium definition, a silver-white, metallic, active element resembling potassium, used in photoelectric cells and radio vacuum tubes. Symbol: Rb; atomic weight: 85 ...

Alkali metal - definition of alkali metal by The Free ...

Define alkali metal. alkali metal synonyms, alkali metal pronunciation, alkali metal translation, English dictionary definition of alkali metal. n. Any of a group of soft, white, low-density, low-melting, highly reactive metallic elements, including lithium, sodium, potassium, rubidium, cesium, and...

RUBIDIUM English Definition and Meaning | Lexico.com

noun. The chemical element of atomic number 37, a rare soft silvery reactive metal of the alkali metal group. 'Those that produce a measurable spectrum when subjected to flame include, but are not limited to, lithium, sodium, potassium, rubidium, cesium, magnesium, calcium, strontium, barium, zinc, and cadmium.'. More example sentences.

Rubidium | definition of rubidium by Medical dictionary

rubidium: [ roo-bid´e-um ] a chemical element, atomic number 37, atomic weight 85.47, symbol Rb. (See Appendix 6.) rubidium 82 a radioactive isotope of rubidium having a half-life of 1.273 minutes and decaying by positron emission. It is used as a tracer in positron emission tomography .

Alkali Metals - 19 Reactions of rubidium and caesium with ...

Jul 09, 2013· Watch the two largest alkali metals react with the airFrom the Peter Wothers lecture series - The Alkali Metals

Rubidium - What does rubidium stand for? The Free Dictionary

Looking for online definition of rubidium or what rubidium stands for? rubidium is listed in the World's largest and most authoritative dictionary database of abbreviations and acronyms. ... Aminotetrazole salts with the nontoxic metals lithium, sodium, potassium, rubidium, and …

Rubidium - Wikipedia

Rubidium is the chemical element with the symbol Rb and atomic number 37. Rubidium is a very soft, silvery-white metal in the alkali metal group. Rubidium metal shares similarities to potassium metal and caesium metal in physical appearance, softness and conductivity. Rubidium cannot be stored under atmospheric oxygen, as a highly exothermic reaction will ensue, sometimes even resulting in the ...

CESIUM English Definition and Meaning | Lexico.com

noun. The chemical element of atomic number 55, a soft, silvery, extremely reactive metal. It belongs to the alkali metal group and occurs as a trace element in some rocks and minerals. 'Those that produce a measurable spectrum when subjected to flame include, but are not limited to, lithium, sodium, potassium, rubidium, cesium, magnesium ...

Facts About Rubidium | Live Science

Sep 10, 2016· Although a second is defined by the oscillations of a cesium atom, often times rubidium is used in atomic clocks, according to Periodic Table, due to a less expensive price tag.

Caesium | Cesium History, Uses, Facts, Physical & Chemical ...

Caesium occurs in minute quantity in earth crust in the form of minerals like pollucite (zeolite mineral Caesium ore). It is mostly present with rubidium in nature and other alkali metals. The abundance of Caesium on the earth crust is about 3 part per million and it …

Rubidium Definition। Properties of Rubidium । Uses of ...

Hey guys!.In this video we will learn about Rubidium. I have covered it's Definition, Properties,and its uses in this video...हे लोगों!।इस वीडियो में हम ...

Rubidium | Definition of Rubidium by Merriam-Webster

Sep 18, 2021· Rubidium definition is - a soft silvery metallic element of the alkali metal group that reacts violently with water and bursts into flame spontaneously in air.

rubidium in English - French-English Dictionary | Glosbe

A catalyst for oxidation of unsaturated and/or saturated aldehydes to unsaturated acids is disclosed where the catalyst includes at least molybdenum (Mo),. phosphorus (P), vanadium (V), bismuth (Bi), and a first component selected from the group consisting of potassium (K), rubidium (Rb), cesium (Cs), thallium (Tl), or mixtures or combinations ...

rubidium - definition and meaning

Following the very spectacular demonstrations of BEC in rubidium and sodium by the JILA and MIT groups, the field has developed explosively and over 20 groups are now conducting BEC experiments.. The 2001 Nobel Prize in Physics - Information for the Public. This suggestion has been of great service in spectrum analysis, and as applied by Bunsen, Kirchoff, and others, has led to the discovery ...

Rubidium - definition of rubidium by The Free Dictionary

Define rubidium. rubidium synonyms, rubidium pronunciation, rubidium translation, English dictionary definition of rubidium. n. Symbol Rb A soft silvery-white metallic element of the alkali group that ignites spontaneously in air and reacts violently with water, used in photocells...

Caesium definition and meaning | Collins English Dictionary

Caesium definition: a ductile silvery-white element of the alkali metal group that is the most... | Meaning, pronunciation, translations and examples

RUBIDIUM | Definition of RUBIDIUM by Oxford Dictionary on ...

noun. (also Rb) mass noun. The chemical element of atomic number 37, a rare soft silvery reactive metal of the alkali metal group. 'Those that produce a measurable spectrum when subjected to flame include, but are not limited to, lithium, sodium, potassium, rubidium, cesium, magnesium, calcium, strontium, barium, zinc, and cadmium.'. More ...

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