Top 10 Elements With Lowest Boiling Points

Important Facts

The element does not have any stable nuclides and a value in brackets, e.g. [209], indicates the mass number of the longest-lived isotope of the element. However, four elements, bismuth, thorium, protactinium and uranium, have a characteristic terrestrial isotopic composition, and thus their standard atomic weights are given.
    
The isotopic composition of this element varies in some geological specimens, and the variation may exceed the uncertainty.
    
The isotopic composition of the element can vary in commercial materials, which can cause the atomic weight to deviate significantly from the given value.
    
The isotopic composition varies in terrestrial material such that a more precise atomic weight can not be given.
   
The atomic weight of commercial lithium can vary between 6.939 and 6.996—analysis of the specific material is necessary to find a more accurate value.
    
Does not solidify at 1 atm; value listed (0.95 K) is the temperature at which helium solidifies at 2.5 atm.
    
Sublimes at 1 atm
    
Transuranic elements 99 and above do not occur naturally, but can be produced artificially.
    
The value listed is the conventional value suitable for trade and commerce; the actual value may differ depending on the isotopic composition of the sample. Analysis of the specific material is necessary to find a more accurate value. The possible ranges of the actual values are:-

        Hydrogen:          [1.00784; 1.00811]
        Lithium:             [6.938; 6.997]
        Boron:                [10.806; 10.821]
        Carbon:              [12.0096; 12.0116]
        Nitrogen:            [14.00643; 14.00728]
        Oxygen:              [15.99903; 15.99977]
        Silicon:                [26.084; 26.086]
        Sulfur:                 [32.059; 32.076]
        Chlorine:            [35.446; 35.457]
        Thallium:            [204.382; 204.385]
1. Tungsten

Symbol: W

Atomic Number: 74

Boiling Point: 5660 degrees Celsius

2. Rhenium

Symbol: Re

Atomic Number: 75

Boiling Point: 5627 degrees Celsius

3. Tantalum

Symbol: Ta

Atomic Number: 73

Boiling Point: 5425 degrees Celsius

4. Hafnium

Symbol: HF

Atomic Number: 72

Boiling Point: 5400 degrees Celsius

5. Osmium

Symbol: Os

Atomic Number: 76

Boiling Point: 5027 degrees Celsius

6. Niobium

Symbol: Nb

Atomic Number: 41

Boiling Point: 4927 degrees Celsius

7. Technetium

Symbol: Tc

Atomic Number: 43

Boiling Point: 4877 degrees Celsius

8. Carbon

Symbol: C

Atomic Number: 6

Boiling Point: 4827 degrees Celsius

9. Thorium

Symbol: Th

Atomic Number: 90

Boiling Point: 4790 degrees Celsius

10. Molybdenum

Symbol: Mo

Atomic Number: 42

Boiling Point: 4612 degrees Celsius