Strontium is a chemical element; it has symbol Sr and atomic number 38. An alkaline earth metal, strontium is a soft silver-white yellowish metallic element that is highly chemically reactive. The metal forms a dark oxide layer when it is exposed to air.

2024年12月23日 · strontium (Sr), chemical element, one of the alkaline-earth metals of Group 2 (IIa) of the periodic table. It is used as an ingredient in red signal flares and phosphors and is the principal health hazard in radioactive fallout.

Element Strontium (Sr), Group 2, Atomic Number 38, s-block, Mass 87.62. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images.

2024年4月14日 · Strontium is a chemical element with the symbol Sr and atomic number 38. It is an alkaline earth metal that is soft and silver-white when freshly cut, but tarnishes to a yellowish color in air. Strontium is chemically similar to its group neighbors, calcium and barium.

Strontium is a chemical element with symbol Sr and atomic number 38. Classified as a n alkaline earth metal, Strontium is a solid at room temperature. J.C. Slater, J Chem Phys, 1964, 41 (10), 3199-3205. DOI:10.1063/1.1725697.

Strontium is a Group 2 Alkaline earth metal. It usually exists as a divalent ion, Sr 2+, in its compounds. Strontium’s chemistry is very similar to that of calcium, which sits above it in Group 2. Strontium is used for producing glass (cathode ray tubes) for color televisions.

Strontium is the 38th element in the periodic table and has a symbol of Sr and atomic number of 38. It has an atomic weight of 87.62 and a mass number of 88. Strontium has thirty-eight protons and fifty neutrons in its nucleus, and thirty-eight electrons in five shells. It is located in group two, period five and block s of the periodic table.

Strontium is a chemical element of the periodic table with chemical symbol Sr and atomic number 38 with an atomic weight of 87.621 u and is classed as alkaline earth metal and is part of group 2 (alkaline earth metal). Strontium is solid at room temperature.

2019年7月3日 · Strontium is a yellowish-white alkaline earth metal with atomic number 38 and element symbol Sr. The element is known for producing red flames in fireworks and emergency flares and for its radioactive isotope that is found in nuclear fallout.

2013年5月20日 · Strontium is a soft, silvery metal with a number of uses: It blocks X-rays emitted by TV picture tubes; it causes paint to glow in the dark; and it is responsible for the brilliant reds in...