Gallium (Ga) VS Indium (In)
A definitive side-by-side comparison of two essential element profiles.
VS
Main Differences
Gallium (Ga) is an element in the post-transition metals category with an atomic number of 31. Indium (In) is an element in the post-transition metals category with an atomic number of 49.
Indium (In) is 1.2x denser than Gallium (Ga). However, Indium (In) melts at a higher temperature than Gallium (Ga) (a difference of 126.8 Kelvin).
Where do the names come from?
Ga Gallium (Ga) Naming History
The name Gallium is derived from the Latin name for France, ''Gallia''
In Indium (In) Naming History
The name Indium comes from the Latin ''indicium'', meaning violet or indigo.
Related Comparisons
Compare
Gallium (Ga)
Indium (In)
Category
Post-transition Metals
Post-transition Metals
Atomic Number
31
49
Symbol
Ga
In
Atomic Mass
69.723 u
114.818 u
Group
13
13
Period
4
5
Block
p-block
p-block
Standard State (at 20°C)
solid
solid
Density
5.91 g/cm³
7.31 g/cm³
Melting Point (°C)
29.7646°C
156.60°C
Melting Point (°F)
85.5763°F
313.88°F
Melting Point (K)
302.91 K
429.75 K
Boiling Point (°C)
2229°C
2027°C
Boiling Point (°F)
4044°F
3681°F
Boiling Point (K)
2673 K
2345 K
Year Discovered:
1875
1863
CAS Number
7440-55-3
7440-74-6
Origin of Name:
The name is derived from the Latin name for France, ''Gallia''
The name comes from the Latin ''indicium'', meaning violet or indigo.