Term: dysprosium (Dy)
Literally meaning: “pertaining to not accessible ”
Origin
δυσ-/dys-(=prefix used with a negative sense meaning “difficult”,
“bad”, “abnormal”, “misfortune”) > δύω/dyo(=decline)
δύση/dysi(=sundown)
+προσιτός/prositos (=accessible)
> προς/pros(=towards) + ίημι/eemi(=send)
Coined/History
Dysprosium was found in 1886
by French chemist Paul Emile de
Boisdaudran (1838-1912) when he separated dysprosium oxide from homium oxide. Boisdaudran
isolated dysprosium with a time consuming procedure which involved 32 precipitations leading to its name which means “hard to obtain”.
Definition
Dysprosium is a chemical element with atomic number 66 and atomic mass 162,500.
It is found only in minerals and never as a free element. It is used in nuclear
reactors because is proper to absorb neutrons and for dat6a storing eg compact discs.
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