Pair style TIP4P

Dear LAMMPS users
I am using the TIP4P/2005 model to simulate water and ions in my system. I am unsure whether to use the hybrid pair style for ions or if the “pair_style lj/cut/tip4p/long” command will work for ions as well.
Many thanks in advance

You must use the tip4p pair style for all interactions. Otherwise the location for the negative charge of the water molecules will be wrong when computing Coulomb interactions. Only the tip4p pair style know how to determine the location of the M point and use that for computing Coulomb forces.

Thank you.
If we use tip4p pair style for all interactions, what pair style is actually applying on ions? Is it lj/cut/coul/long?

Please study the documentation.

Like Axel said, study the docs: pair_style lj/cut/tip4p/cut command — LAMMPS documentation :wink: