What is the formula for the polyatomic ion and name the following compound
Sn(NO2)2​

Ok so i was writing a big àss explanation but i realized im not that good at explaining as i thought i was so plz just watch these vids by tyler dewitt. my awesome teacher recommended these videos and tyler dewitt's also a really good teacher and if you watch his vids you'll really master this topic:

Writing Ionic Formula: https://youtu.be/URc75hoKGLY

Naming Ionic Compounds: https://youtu.be/mKo72RnN37E

Writing Formulas with Polyatomic Ions: https://youtu.be/p9iQ5Qn42DM

Writing Ionic Formulas with Transition Metals: https://youtu.be/H4nfE8gRX7Q

Naming Ionic Compounds with Transition Metals Introduction: https://youtu.be/H4nfE8gRX7Q

*btw the pic i attached will be very useful to you except when youre dealing with transition metals and also these links will also help you. the professor dave explains videos about naming ionic compounds just didnt help me but tyler dewitt really did so if you watch his videos you'll be fine