ストロンチウム
1. strontium (Sr)
2. StrontiumStrontium is a chemical element with the symbol Sr and the atomic number 38. An alkaline earth metal, strontium is a soft silver-white or yellowish metallic element that is highly reactive chemically. The metal turns yellow when exposed to air. It occurs naturally in the minerals celestine and strontianite. While natural strontium is stable, the synthetic Sr isotope is present in radioactive fallout and has a half-life of 28.90 years.
Read “Strontium” on English Wikipedia
Read “ストロンチウム” on Japanese Wikipedia
Read “Strontium” on DBpedia
Read “Strontium” on English Wikipedia
Read “ストロンチウム” on Japanese Wikipedia
Read “Strontium” on DBpedia
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