Noble gases with even nuclear spin form superfluids?

[Spinnor]

Other than Helium do Noble gases with even nuclear spin form superfluids?

Is there a simple quantum mechanical explanation why the difference below of the Melting point and Boiling point of the Noble gases is roughly the same value? A yes or no would suffice.

From, https://en.wikipedia.org/wiki/Noble_gas#Physical_and_atomic_properties

Thanks!

 

[Bystander]

explanation why the difference below of the Melting point and Boiling point of the Noble gases is roughly the same value? A yes or no would suffice.

Yes.