Chemical element
Strontium
- Sr
- Z = 38
- alkaline earth
Strontium (Sr) is element 38, a alkaline earth in period 5 and group 2. Its standard atomic weight is 87.62 Da. Weights follow IUPAC standard atomic weights, 2021 revision.
Identity
SymbolSr
Standard atomic weight87.62atomic mass units (Da)
Mass in kilograms1.4549643 × 10^-25
Categoryalkaline earth
Group2
Period5
Blocks-block
Electrons in a neutral atom38
Neutrons in the most common isotope50≈
Quantities
Molar mass87.62 g/mol
Mass of one mole87.62 grams
Atoms in one gram6.8730207 × 10^21
Mass of one atom1.4549643 × 10^-22 g
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