Strontium (Sr) VS Barium (Ba)
A definitive side-by-side comparison of two essential element profiles.
VS
Main Differences
Strontium (Sr) is an element in the alkaline earth metals category with an atomic number of 38. Barium (Ba) is an element in the alkaline earth metals category with an atomic number of 56.
Barium (Ba) is 1.3x denser than Strontium (Sr). Furthermore, Strontium (Sr) melts at a significantly higher temperature than Barium (Ba) (a difference of 50.0 Kelvin).
Where do the names come from?
Sr Strontium (Sr) Naming History
Strontium is named after Strontian, a small town in Scotland.
Ba Barium (Ba) Naming History
The name Barium comes from the Greek ''barys'', meaning heavy.
Related Comparisons
Compare
Strontium (Sr)
Barium (Ba)
Category
Alkaline Earth Metals
Alkaline Earth Metals
Atomic Number
38
56
Symbol
Sr
Ba
Atomic Mass
87.62 u
137.327 u
Group
2
2
Period
5
6
Block
s-block
s-block
Standard State (at 20°C)
solid
solid
Density
2.64 g/cm³
3.51 g/cm³
Melting Point (°C)
777°C
727°C
Melting Point (°F)
1431°F
1341°F
Melting Point (K)
1050 K
1000 K
Boiling Point (°C)
1377°C
1845°C
Boiling Point (°F)
2511°F
3353°F
Boiling Point (K)
1655 K
2170 K
Year Discovered:
1790
1774
CAS Number
7440-24-6
7440-39-3
Origin of Name:
Strontium is named after Strontian, a small town in Scotland.
The name comes from the Greek ''barys'', meaning heavy.