stron·tium /ˈstrɑn(t)ʃ(i)əm, ˈstrɑntiəm/
鍶[金屬元素]
stron·tium /ˈstrɑnʧ(ɪ)əm, ˈstrɑntɪəm/ 名詞
Stron·ti·um n. Chem. A metallic element of the calcium group, always naturally occurring combined, as in the minerals strontianite, celestite, etc. It is isolated as a yellowish metal, somewhat malleable but harder than calcium. It is chiefly employed (as in the nitrate) to color pyrotechnic flames red. Symbol Sr. Atomic weight 87.3.
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strontium
n : a soft silver-white or yellowish metallic element of the
alkali metal group; turns yellow in air; occurs in
celestite and strontianite [syn: Sr, atomic number 38]
strontium
Symbol: Sr
Atomic number: 38
Atomic weight: 87.62
Soft yellowish metallic element, belongs to group 2 of the periodic
table. Highly reactive chemically. Sr-90 is present in radioactive fallout
and has a half-life of 28 years. Discovered in 1798 by Klaproth and Hope,
isolated in 1808 by Humphry Davy.