$ sudo apt-get update
$ sudo apt-get install nwchem-data 

nwchem-data is installed in your system.

Make ensure the nwchem-data package were installed using the commands given below,

$ sudo dpkg-query -l | grep nwchem-data *

You will get with nwchem-data package name, version, architecture and description in a table

nwchem-data package basic information: