Strontium (Sr), element 38 – Learn Acer periodic table

Alkaline earth metal, atomic number 38.

Strontium is a chemical element with symbol Sr and 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 it is exposed to air.

Symbol Sr. Atomic mass 87.621 u. Group 2, period 5. Electron configuration [Kr] 5s2. Electrons per shell 2, 8, 18, 8, 2. State at room temperature: Solid. Melting point 776.9 °C, boiling point 1376.8 °C. Discovered by William Cruickshank (chemist).

Element data from Wikipedia, CC BY-SA 3.0.

Strontium (Sr), element 38 – Learn Acer periodic table

Strontium

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