Strontium - Sr
The element Strontium, atomic number 38, is formed from planetary nebulae, which results from red giant death.
- Name:
- Strontium
- Symbol:
- Sr
- Atomic number (protons):
- 38
- How created:
- planetary nebulae
- Process:
- red giant death
- How created (secondary):
- Type II supernova
- Process (secondary):
- star core collapse
- Group (column):
- 2
- Period (row):
- 5
- Atomic weight:
- 87.620000000
- Melting point:
- 1050 K
- Boiling point:
- 1655 K
- Density:
- 2.6400000 g/cm3
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