38Sr
Element 38
Strontium
Alkaline earth
Strontium is a chemical element with symbol Sr and atomic number 38.
Key data
- Atomic number
- 38
- Atomic mass
- 87.621 u
- Group / Period
- 2 / 5
- Block
- s-block
- Phase at STP
- Solid
- Density
- 2.64 g/cm³
- Melting point
- 776.9 °C
- Boiling point
- 1376.8 °C
- Electron configuration
- [Kr] 5s2
Common uses
- •Red fireworks
- •Old CRT screens
- •Bone-seeking isotope
Discovery
Year: 1808
Discovered by: William Cruickshank (chemist)
Frequently asked questions
What is the atomic number of Strontium?
Strontium has atomic number 38. Its symbol is Sr and its atomic mass is 87.621 u.
What category of element is Strontium?
Strontium is classified as alkaline earth. It sits in group 2, period 5 of the periodic table.
What is Strontium used for?
Common uses of Strontium include: Red fireworks, Old CRT screens, Bone-seeking isotope.
When was Strontium discovered?
Strontium was discovered in 1808 by William Cruickshank (chemist).
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