Helium (He) VS Neon (Ne)
A definitive side-by-side comparison of two essential element profiles.
VS
Main Differences
Helium (He) is an element in the noble gases category with an atomic number of 2. Neon (Ne) is an element in the noble gases category with an atomic number of 10.
Neon (Ne) is 5.1x denser than Helium (He). However, Neon (Ne) melts at a higher temperature than Helium (He) (a difference of 23.6 Kelvin).
Where do the names come from?
He Helium (He) Naming History
The name is derived from the Greek, 'helios' meaning sun, as it was in the sun's corona that helium was first detected.
Ne Neon (Ne) Naming History
The name Neon comes from the Greek ''neos'', meaning new.
Related Comparisons
Compare
Helium (He)
Neon (Ne)
Category
Noble Gases
Noble Gases
Atomic Number
2
10
Symbol
He
Ne
Atomic Mass
4.003 u
20.18 u
Group
18
18
Period
1
2
Block
s-block
p-block
Standard State (at 20°C)
gas
gas
Density
0.178 g/L g/cm³
0.900 g/L g/cm³
Melting Point (°C)
N/A
−248.59°C
Melting Point (°F)
N/A
−415.46°F
Melting Point (K)
0.95 K
24.56 K
Boiling Point (°C)
−268.928°C
−246.046°C
Boiling Point (°F)
−452.07°F
−410.883°F
Boiling Point (K)
4.22 K
27.07 K
Year Discovered:
1895
1898
CAS Number
7440-59-7
09/01/7440
Origin of Name:
The name is derived from the Greek, 'helios' meaning sun, as it was in the sun's corona that helium was first detected.
The name comes from the Greek ''neos'', meaning new.