What are some important facts (concepts, exceptions, questions or anything) of inorganic chemistry which are beyond the scope of the NCERT book but are important for the IIT JEE?
You can take guide from IIT JEE toppers they can guide you properly on which topic you should prepare beyond the NCERT as they face the actual examination and become successful. Most of the questions are asked memory based. You need to remember a lot. There are many good books from which you can prepare your inorganic part such as OP Tandon, JD Lee, Cengage chemistry. But it is really difficult to memorize 200-300 pages of every topic. So, first read the NCERT book properly. Read this book 4 to 5 times and do not skip any topic. According to IIT JEE experts or IIT JEE toppers you can need to prepare the following topics beyond NCERT:
Hydrolysis, Acids and bases, Polarity and Planarity of molecule, Bents and drago’s rule, Molecular orbital theory, Odd electron species, Backbonding and bridge bonding, salt analysis, Crystal field theory and bonding in carbonyl compounds. To get detailed information and guide connect to IIT JEE toppers. You can visit the link to get related answers: https://www.quora.com/Is-NCERT-sufficient-for-studying-inorganic-chemistry-for-both-JEE-Advanced-and-JEE-Mains/answer/Ayush-Gupta-259?ch=10&oid=25143570&share=d90ef207&srid=hrUqLC&target_type=answer