Boron (B) VS Aluminium (Al)
A definitive side-by-side comparison of two essential element profiles.
VS
Main Differences
Boron (B) is an element in the metalloids category with an atomic number of 5. Aluminium (Al) is an element in the post-transition metals category with an atomic number of 13.
Aluminium (Al) is 1.2x denser than Boron (B). Furthermore, Boron (B) melts at a significantly higher temperature than Aluminium (Al) (a difference of 1415.5 Kelvin).
Where do the names come from?
Boron (B) Naming History
The name Boron is derived from the Arabic 'buraq', which was the name for borax.
Al Aluminium (Al) Naming History
The name Aluminium is derived from the Latin name for alum, 'alumen' meaning bitter salt.
Related Comparisons
Compare
Boron (B)
Aluminium (Al)
Category
Metalloids
Post-transition Metals
Atomic Number
5
13
Symbol
B
Al
Atomic Mass
10.81 u
26.982 u
Group
13
13
Period
2
3
Block
p-block
p-block
Standard State (at 20°C)
solid
solid
Density
2.34 g/cm³
2.7 g/cm³
Melting Point (°C)
2077°C
660.323°C
Melting Point (°F)
3771°F
1220.581°F
Melting Point (K)
2349 K
933.47 K
Boiling Point (°C)
4000°C
2519°C
Boiling Point (°F)
7232°F
4566°F
Boiling Point (K)
4200 K
2792 K
Year Discovered:
1808
1825
CAS Number
7440-42-8
7429-90-5
Origin of Name:
The name is derived from the Arabic 'buraq', which was the name for borax.
The name is derived from the Latin name for alum, 'alumen' meaning bitter salt.