Here are a few options to connect to a 11gR2 RAC Database (using SCAN address) using SQLDeveloper, couldn't find this info handy anywhere so thought of posting it which could be of some help to developers/DBA's out there.
11gR2 RAC Connection to SCAN Hostname using JDBC Option
11gR2 RAC Connection to SCAN Hostname using SERVICE Name Option
11gR2 RAC Connection to SCAN Hostname using TNSNAMES Option
