Which elements on the periodic table would boil at only 1 degrees Celsius?

I assume you need a list of elements that will boil even at 1 degree Celsius.

There are 11 such elements on our periodic table. Here is a list of these elements with their respective boiling points:

1. Helium (He): -268.6 degrees C


2. Hydrogen (H): -252.87 degrees C


3. Neon (Ne): -246.1 degrees C


4. Nitrogen (N): -195.8 degrees C


5. Fluorine (F): -188.14 degrees C


6. Argon (Ar): -186 degrees C


7. Oxygen (O): -183 degrees C


8. Krypton (Kr): -153.4 degrees C


9. Xenon (Xe): -108.1 degrees C


10. Radon (Rn): -68.1 degrees C


11. Chlorine (Cl): -34.6 degrees C

Since all these elements have sub-zero (or less than zero) degree Celsius boiling points, they will all boil at 1 degree Celsius or less (depending on their respective boiling points). Interestingly, all the noble gases (He, Ne, Ar, Kr, Xe and Rn) have a very low boiling point (less than 0 degree C in all cases). 

Hope this helps.