error in pair style & pair coeff

Hello dear

Excuse me

Does anyone know of error in pair style.?

I want to simulate water and nanofluid cu…data file contains just water not cu.i’ve defined cu in input code in a sphere region.(is it wrong??)

When it runs it shows this error “you must define pair style before pair coeff” .are pair style and pair coeff true.?sorry can anyone edit input code specially in term of pair style and pair coeff…thanks

Sincerely Mehdi.

Units real

Cu

lattice fcc 3.610

region Cu sphere 0 0 0 7 units box

create_atoms 3 region Cu

group Cu type 3

group oxygen type 1

group hydrogen type 2

group cu type 3

group water type 1 2

set group oxygen charge -0.8476

set group hydrogen charge 0.4238

set group cu charge 0.000

pair interaction

#sigma=32.0e-11m epsilon=108.0e-21j

pair_style hybrid lj/cut/coul/long 32.0e-11 108.0e-21 eam lj/cut 32.0e-11

pair_coeff 1 1 lj/cut/coul/long 32.0e-11 108.0e-21

pair_coeff 1 2 lj/cut/coul/long 32.0e-11 108.0e-21

pair_coeff 1 3 lj/cut/coul/long 32.0e-11 108.0e-21

pair_coeff 2 2 lj/cut/coul/long 32.0e-11 108.0e-21

pair_coeff 2 3 lj/cut/coul/long 32.0e-11 108.0e-21

pair_coeff 3 3 eam cu

bond_coeff 1 33.5315 3.3572

angle_coeff 1 2.181383 331.52

Please follow Axel’s previous advice to you and modify your input script.

Ray