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PotassiumCaesiumLithiumSodiumPeriodic TableAtomsCesiumMaser clocksPassive hydrogen maserAtomic clockChlorideGALILEOOxygenLightest elementBisulfateSulfateHydrideHydroxideMoleculesCarbonateAtomClocksCarbonCompoundsDeuteriumFrequencyAcidsCompoundPhosphateNeutralSolubleElementHeliumBondsChemicalElementsReadilyPhysicalWaterSymbolUniverseTimeSolarGiveStandard
Potassium2
Caesium1
  • 837 kB) M. de Forcrand: "Sur les chlorures et sulfates de rubidium et de caesium" in Compt. (wikipedia.org)
Lithium1
Sodium1
  • The solvothermal reaction of H 3 BO 3 , sodium tert -butoxide, Rb 2 CO 3 and pyridine led to a new alkaline metal borate hexa-rubidium hexa-hydroxy-dodeca-borate dihydrate. (iucr.org)
Periodic Table3
Atoms6
  • Very few systems show this, liquid 4 He is the most accessible but it has recently been reported that it occurs in small numbers of rubidium atoms and it is considered to exist in neutron stars. (ex.ac.uk)
  • Step 1: Find out the chemical formula and determine constituent atoms and their number in a Rubidium Chloride molecule. (laboratorynotes.com)
  • From the chemical formula, you will know different atoms and their number in a Rubidium chloride molecule. (laboratorynotes.com)
  • Step 3: Calculate the molecular weight of Rubidium chloride by adding the total weight of all atoms. (laboratorynotes.com)
  • Hydrogen has been around since atoms first formed in the residue of the Big Bang, and is the most abundant element by far. (atomiclaboratories.com)
  • Normally, pure hydrogen exists in the form of a hydrogen molecule with two atoms, H2. (atomiclaboratories.com)
Cesium3
  • Liquid 4 He wets most materials but it does not wet cesium or rubidium and so these systems are excellent for studying the phenomena of non-wetting and pre-wetting which are difficult to do with classical fluids. (ex.ac.uk)
  • They have been based upon hydrogen, rubidium, or cesium, although the cesium atomic clocks are the ones upon which the modern definition of the second is based. (spectroscopyonline.com)
  • Kirchoff used this method to discover cesium and rubidium. (aps.org)
Maser clocks4
  • Three of the clocks that failed were rubidium atomic frequency clocks and seven were newer, more-precise passive hydrogen maser clocks, one of which has since restarted. (spacenews.com)
  • A plan to refurbish the remaining [hydrogen maser] clocks still to be launched is currently being finalised," the statement said. (spacenews.com)
  • While the four Galileo In Orbit Validation (IOV) satellites that Airbus Defence and Space built and launched between 2011 and 2012 have not suffered any rubidium clock failures, five hydrogen maser clocks aboard the IOV satellites have failed within the past two years. (spacenews.com)
  • Each Galileo satellite carries two rubidium and two hydrogen maser clocks . (rntfnd.org)
Passive hydrogen maser1
  • GIOVE-A carries a prototype rubidium atomic clock while GIOVE-B is equipped with an ultra-precise passive hydrogen maser time and frequency unit as well as a second rubidium clock. (insidegnss.com)
Atomic clock1
  • A major milestone along this path was achieved recently when the science team performed what could be considered a "heart transplant" on the telescope by installing a custom-built atomic clock powered by a hydrogen maser [3] . (eso.org)
Chloride8
GALILEO5
  • Rubidium clocks are used for GNSS (global navigation satellite systems) such as GPS and GALILEO. (photonics.com)
  • With further improvement underway, Menlo aims to outperform the space-grade hydrogen maser (H-maser) developed for GALILEO. (photonics.com)
  • ESA said in its statement that while investigations continue, the 22-nation space agency and its industrial partners have agreed "that some refurbishment is required on the remaining [rubidium] clocks still to be launched on the eight Galileo satellites currently being constructed or tested. (spacenews.com)
  • ESA's post-briefing statement said that, "in recent months a total of three [rubidium] clocks have undergone unexpected failure on Galileo satellites - all on Full Operational Capability (FOC) satellites, the latest Galileo model. (spacenews.com)
  • six are the more precise hydrogen maser instruments that were designed to give Galileo superior performance to the American GPS network. (rntfnd.org)
Oxygen8
  • He used electricity to split water into hydrogen and oxygen. (webelements.com)
  • He then argued one should be able to reverse the electrolysis and so generate electricity from the reaction of oxygen with hydrogen. (webelements.com)
  • He enclosed platinum strips in separate sealed bottles, one containing hydrogen and one oxygen. (webelements.com)
  • Until later on when people were saying, "You were sitting on top of all that hydrogen and oxygen. (todayinsci.com)
  • Recalling his experience with rocket engine tests using liquid hydrogen and liquid oxygen, while working as an engineer at the Propulsion Systems Laboratory. (todayinsci.com)
  • A hydroxyl is a chemical group containing an oxygen atom covalently bonded with a hydrogen atom. (absoluteastronomy.com)
  • When hydrogen bonds with fluorine, oxygen, or nitrogen, it can participate in a form of medium-strength noncovalent (intermolecular) bonding called hydrogen bonding, which is critical to the stability of many biological molecules. (atomiclaboratories.com)
  • Between the 1760s and 1780s, Henry not only isolated hydrogen, but found that when it burned it combined with oxygen (or 'dephlogisticated air' as it was called) to produce water. (atomiclaboratories.com)
Lightest element1
  • Hydrogen is the lightest element and will explode at concentrations ranging from 4-75 percent by volume in the presence of sunlight, a flame, or a spark. (atomiclaboratories.com)
Bisulfate1
Sulfate4
  • Its crystals are isomorphs with ammonium hydrogen sulfate crystals. (wikipedia.org)
  • The crystal structure of the title compound comprises polymeric chains formed by two independent copper(II) polyhedra, [CuN 2 O 2 ] and [CuN 4 O 2 ], which are linked by sulfate anions and stabilized by extended hydrogen-bonding, C-H⋯π and π-π inter-actions. (iucr.org)
  • Hydrogen Sulfate 51. (gradebuddy.com)
  • Hydrogen Sulfate 41. (gradebuddy.com)
Hydride3
Hydroxide1
Molecules2
  • This means that the molecules on the surface solid hydrogen do not stay at fixed lattice sites as with normal solids do but move around to go to the lowest free energy configuration. (ex.ac.uk)
  • 1. Hydrogen bonding can occur between molecules of methanol, HCHO, and molecules of liquid Y. What could liquid Y be? (xtremepape.rs)
Carbonate6
Atom1
  • The information you sent concerning the Theosophic meaning of the hydrogen atom and it's revelance to the pure number (18) (18 Anu's to the hydrogen unit ) is a mirror to the " identity" formula that I discovered several years ago that relates Moseley's ratio of X-ray frequencies to atomic number. (greatdreams.com)
Clocks1
  • Iodine-based optical clocks can achieve better precision than rubidium gas cells used previously. (photonics.com)
Carbon1
  • The non-metals hydrogen and carbon are often included in the reactivity series, and this quite important when considering the method by which a metal can be extracted from its ore. (docbrown.info)
Compounds1
  • Hydrogen has a melting point of -259.14 °C and a boiling point of -252.87 °C. Despite its stability, hydrogen forms many bonds and is present in many different compounds. (atomiclaboratories.com)
Deuterium2
  • Deuterium gas ( 2 H 2 , often written D 2 ), made up from deuterium, a heavy isotope of hydrogen, was discovered in 1931 by Harold Urey, a professor of chemistry at Chicago and California (both USA). (webelements.com)
  • Three naturally occurring isotopes of hydrogen exist: protium, deuterium, and tritium, each with different properties due to the difference in the number of neutrons in the nucleus. (atomiclaboratories.com)
Frequency2
Acids1
Compound1
Phosphate2
Neutral1
Soluble1
Element6
  • It is in the same octonion group as hydrogen ,Group 1A .Rubidium is a very unstable element in earth conditions since it oxidizes in air and water combusting as a red flame. (greatdreams.com)
  • Hydrogen is the first element in the periodic system table. (chemicalequationbalance.com)
  • The table shows element percentages for H 2 Te (hydrogen telluride). (webelements.com)
  • After running tests to ensure that the line was indeed a new element, as opposed to a new form of hydrogen, Ramsey's work appeared in the Proceedings of the Royal Society of London later that year, and Swedish chemists Per Teodor Cleve and Abraham Langlet successfully isolated the gas from cleveite. (aps.org)
  • Hydrogen is a chemical element with atomic number 1 which means there are 1 protons and 1 electrons in the atomic structure. (atomiclaboratories.com)
  • Hydrogen is an essential element for life. (atomiclaboratories.com)
Helium1
  • The lifting agent for the ill fated Hindenberg ballooon was hydrogen rather than the safer helium. (webelements.com)
Bonds1
  • In the crystal, O-H⋯O hydrogen bonds between the components lead to the formation of a three-dimensional supra-molecular framework. (iucr.org)
Chemical1
  • Chemical, physical and thermal properties of hydrogen: Values at 25 o C (77 o F, 298 K) and atmospheric pressure Forget 10 Downing Street or 1600 Pennsylvania Avenue, the most prestigious address in the. (atomiclaboratories.com)
Elements1
  • All the elements in this table are elements with one valence electron, and with the exclusion of hydrogen, these are elements that have a silvery if not golden appearance. (differencebetween.net)
Readily1
Physical1
Water2
Symbol3
Universe1
Time1
  • The current rubidium-based time reference has been replaced by a more accurate hydrogen maser. (eso.org)
Solar1
  • He focused on the solar prominences and concluded they mostly comprise hydrogen gas, heated to extremely high temperatures. (aps.org)
Give1
Standard1