How to assign basis set to isotope of hydrogen

[Roshan Pudasaini]

H1             0.07542942    -3.18103132    -0.90381230 mass 0.114892050

I want to give basis set of hydrogen to H1 but can't allocate it in input file.
 Summary of "ao basis" -> "" (cartesian)
 ------------------------------------------------------------------------------
       Tag                 Description            Shells   Functions and Types
 ---------------- ------------------------------  ------  ---------------------
 H                       user specified              3        5   2s1p
 C                       user specified              6       15   3s2p1d
 N                       user specified              6       15   3s2p1d
 O                       user specified              6       15   3s2p1d
 Fe                      user specified             12       39   5s4p2d1f 

NWChem has taken the mass of H1 but how can I put basis set to H1 here? I am using basis set 6-31G(d,p). While using 6-31G, I was able to give basis set of H to H1. 

[Edoardo Aprà]

You can use the "BSE" keyword to use the basis set exchange library directly from NWChem, since this option will assign the hydrogen basis set for the H1 label.

https://nwchemgit.github.io/Basis.html#bse-keyword

basis "ao basis" bse
* library 6-31G(d,p)
end

The basis set input section will replace the one from the posted relax1.nw

There is a caveat, though: use of the BSE will also use the spherical/cartesian keywords from the basis library files.

In this specific case, spherical functions will be used (instead of the default cartesian)