wives

Q: Will a man have two worldly wives in jannah? Can’t he have more wives from the world?

Q: I've read that Hazrat Hafsah (Radhiyallahu Anha) used to answer back to the Holy Prophet (Sallallahu Alaihi Wasallam). And there was a woman who said I seek refuge with Allah from you. Was this a shortcoming on their part?

Q: How did Nabi (Sallallahu Alayhi Wasallam) manage 11 wives? Is it true that he had given talaaq one by one before marrying the other one? Is there authentic hadith in this regard?

Q:

1) How many wives can you get in Jannah?

2) What things nullify Islam?

3) If your Islam gets nullifed, how do you become a Muslim again? Do you need to read the kalima tayebah again?