Below script to export from 12c and import that dump into 11g to use version parameter -
expdp user/password@db directory=<directory_name> dumpfile=<dumpfile_name>.dmp logfile=<logfile_name>.log tables=<table_name> job_name=<job_name> version=11.2
expdp user/password@db directory=<directory_name> dumpfile=<dumpfile_name>.dmp logfile=<logfile_name>.log tables=<table_name> job_name=<job_name> version=11.2