What is the chemical sign of strontium?

What is the chemical sign of Strontium and what are the main properties of this substance? Maybe you can write something about the use of Strontium?
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The chemical sign of strontium Sr. Main properties of strontium: Electronic structure: [Kr] 5s2 Number: 38 Atomic mass: 87.62 u ± 0.01 u Number of electrons per shell: 2,8,18,8,2 Melting point: 777 ° CA Areas of application of strontium: Used as an alloying material for the refining of light metals. It is also used to train lead. Used as a red dye in fireworks. It is also used in marine aquaristics. 
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