Exact Mass: 20.006227799999998
Exact Mass Matches: 20.006227799999998
Found 7 metabolites which its exact mass value is equals to given mass value 20.006227799999998,
within given mass tolerance error 0.0002 dalton. Try search metabolite list with more accurate mass tolerance error
4.0E-5 dalton.
Hafnium
Hafnium, also known as 72hf or hafnio, is a member of the class of compounds known as homogeneous transition metal compounds. Homogeneous transition metal compounds are inorganic compounds containing only metal atoms,with the largest atom being a transition metal atom. Hafnium can be found in a number of food items such as common hazelnut, almond, cucumber, and spinach, which makes hafnium a potential biomarker for the consumption of these food products. Hafnium can be found primarily in saliva and urine. Hafnium is a chemical element with symbol Hf and atomic number 72. A lustrous, silvery gray, tetravalent transition metal, hafnium chemically resembles zirconium and is found in many zirconium minerals. Its existence was predicted by Dmitri Mendeleev in 1869, though it was not identified until 1923, by Coster and Hevesy, making it the last stable element to be discovered. Hafnium is named after Hafnia, the Latin name for Copenhagen, where it was discovered . Hafnium is a chemical element with the symbol Hf and atomic number 72. Hafnium is used in filaments and electrodes. Some semiconductor fabrication processes use its oxide for integrated circuits at 45 nm and smaller feature lengths. Some superalloys used for special applications contain hafnium in combination with niobium, titanium, or tungsten.
hydrogen fluoride
A diatomic molecule containing covalently bonded hydrogen and fluorine atoms.