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My Nucleus has 67 protons.
I have only one stable isotope:
Holmium-165, which has 67 protons plus 98 neutrons.
I have 6 radioisotopes, with half-lives ranging from 15 mins to 4570 years.
My average atomic mass is:
When neutral, I have 67 electrons.Shell structure: 22.214.171.124.8.2
First Energy Level: 2
Second Energy Level: 8
Third Energy Level: 18
Fourth Energy Level: 29
Fifth Energy Level: 8
Sixth Energy Level: 2
| My Home |
(Body, Planet, Universe)
There's no data on my presence in the human body, so there's probably very little there.
I am 0.5 ppb by mass of the Universe.
| || |
Holmium (III) fluoride
Holmium (III) oxide
I was discovered in 1878 by a Sedish chemist, Per Teodor Cleve, and independently by a French physicist, Louis Soret.
I and my friend, Oxygen are used in the filters used for the calibration of the wavelength settings in UV spectrophotometers.
I can also absorb fission-bred neutrons, so I am used in nuclear reactors to keep a chain reaction under control.
My Element Card
Latest page update: made by AndrewCheung
, Oct 22 2006, 1:52 AM EDT
(about this update
About This Update
Edited by AndrewCheung
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