rare earth metal

الإنجليزية - التركية

تعريف rare earth metal في الإنجليزية التركية القاموس.

المصطلحات ذات الصلة

rare earth metals

(Kimya) nadir toprak metalleri

rare earth metals

nadir toprak madenleri

rare metal

soy metal

rare earth metals

azrak toprak metalleri

الإنجليزية - الإنجليزية

تعريف rare earth metal في الإنجليزية الإنجليزية القاموس.

Any of a large class of chemical elements including scandium (atomic number 21), yttrium (39), and the 15 elements from 57 (lanthanum) to 71 (see lanthanides). The rare earths themselves are pure or mixed oxides of these metals, originally thought to be quite scarce; however, cerium, the most plentiful, is three times as abundant as lead in the Earth's crust. The metals never occur free, and the pure oxides never occur in minerals. These metals are similar chemically because their atomic structures are generally similar; all form compounds in which they have valence 3, including stable oxides, carbides, and borides

المصطلحات ذات الصلة

rare metal

{i} didymium

التركية النطق

rer ırth metıl

النطق

/ˈrer ˈərᴛʜ ˈmetəl/ /ˈrɛr ˈɜrθ ˈmɛtəl/