Oxygen (O) VS Fluorine (F)
A definitive side-by-side comparison of two essential element profiles.
VS
Main Differences
Oxygen (O) is an element in the nonmetals category with an atomic number of 8. Fluorine (F) is an element in the halogens category with an atomic number of 9.
Fluorine (F) is 1.2x denser than Oxygen (O). Furthermore, Oxygen (O) melts at a significantly higher temperature than Fluorine (F) (a difference of 0.8 Kelvin).
Where do the names come from?
Oxygen (O) Naming History
The name Oxygen comes from the Greek ''oxy genes'', meaning acid forming.
F Fluorine (F) Naming History
The name Fluorine is derived form the Latin ''fluere'', meaning to flow
Related Comparisons
Compare
Oxygen (O)
Fluorine (F)
Category
Nonmetals
Halogens
Atomic Number
8
9
Symbol
O
F
Atomic Mass
15.999 u
18.998 u
Group
16
17
Period
2
2
Block
p-block
p-block
Standard State (at 20°C)
gas
gas
Density
1.429 g/L g/cm³
1.696 g/L g/cm³
Melting Point (°C)
−218.79°C
−219.67°C
Melting Point (°F)
−361.82°F
−363.41°F
Melting Point (K)
54.36 K
53.53 K
Boiling Point (°C)
−182.962°C
−188.11°C
Boiling Point (°F)
−297.332°F
−306.6°F
Boiling Point (K)
90.2 K
85.03 K
Year Discovered:
1774
1886
CAS Number
7782-44-7
7782-41-4
Origin of Name:
The name comes from the Greek ''oxy genes'', meaning acid forming.
The name is derived form the Latin ''fluere'', meaning to flow