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Holmium was discovered in France by the Frenchman Jacques-Louis Soret in 1878.
Holmium was discovered by Per Theodor Cleve, a Swedish chemist, in 1879. Cleve used the same method Carl Gustaf Mosander used to discover lanthanum, erbium and terbium, he looked for impurities in the oxides of other rare earth elements. He started with erbia, the oxide of erbium (Er2O3), and removed all of the known contaminants. After further processing, he obtained two new materials, one brown and the other green. Cleve named the brown material holmia and the green material thulia. Holmia is the oxide of the element holmium and thulia is the oxide of the element thulium. Holmium's absorption spectrum was observed later that year by J. L. Soret and M. Delafontaine, Swiss chemists. Today, holmium is primarily obtained through an ion exchange process from monazite sand ((Ce, La, Th, Nd, Y)PO4), a material rich in rare earth elements that can contain as much as 0.05% holmium.
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Name 2 units that speed can be measured in?
Speed can be measured in units such as meters per second (m/s) or kilometers per hour (km/h).
What is the average rainfall rate in inches per hour in your region?
The average rainfall rate in inches per hour in our region is 0.25 inches per hour.
What is the temperature at 37000ft?
Equates to approximately 681.82 miles per hour. Supporting math - There are 60 seconds in every minute (multiply 1000 X 60 = 60,000) There are 60 minutes in every hour (multiply 60,000 X 60 = 3,600,000) There are 5280 feet in every mile (divide 3,600,000 / 5280 = 681.8181818181)1,000 feet per second is 681.82 miles per hour.
What state experiences the highest number of tornadoes per square mile?
Oklahoma experiences the most tornadoes per square mile.
What is the average number of tornadoes per year in Mississippi?
Based on data from the past 30 years, Mississippi averages about 40 tornadoes per year.
Where was holmium found?
In 1878, Marc Delafontaine and Jacques-Louis Soret discovered the characteristic spectroscopic absorption lines of a new element they called Element X. Later that year, Per Teodor Cleve independently discovered Holmium through chemical separation techniques from the mineral erbia earth. The three are credited with the discovery of Holmium.
What is the relation of Per Theodor Cleve to Teodore the beaver Clever?
The writers were of Swedish decent and had a great respect for Cleve.
When was Per Teodor Cleve born?
Per Teodor Cleve was born on 1840-02-10.
When did Per Teodor Cleve die?
Per Teodor Cleve died on 1905-06-18.
What element has 67 protons?
Holmium: The number of protons per nucleus of an atom is the same as its atomic number.
When was Per Theodor Haugen born?
Per Theodor Haugen was born on October 8, 1932, in Norway.
What has the author Per Teodor Cleve written?
Per Teodor Cleve has written: 'Synopsis of the naviculoid diatoms' -- subject(s): Fragilariaceae 'Carl Wilhelm Scheele' 'A treatise on the phytoplankton of the Atlantic and its tributaries' -- subject(s): Phytoplankton
Who discovered thullium?
Thulium was discovered by Swedish chemist Per Teodor Cleve in 1879.
When was Hellum discovered?
Hellium was discovered in 1895 by Sir William Ramsay and Per Teodor Cleve.
What is one mole of holmium in grams?
By definition, one mole would be the same as the atomic mass. You take the number of moles and multiply it by the atomic mass. So if you have just 1 mole, the number of grams will be the atomic mass. Holmium's atomic mass is 164.93 grams.
What is thulium named after?
Thulium is named after the ancient name for Scandinavia, Thule. This element was discovered in 1879 by Swedish chemist Per Teodor Cleve.
What actors and actresses appeared in Twigs - 1978?
The cast of Twigs - 1978 includes: Leif Juster as Fatter Per Theodor Haugen
