Can I sue my husband for emotional and mental abuse and spousal support?

In Arizona the grounds or basis to file a petition for dissolution of marriage is that your marriage is irretrievably broken, with no prospect of reconciliation. Emotional and mental abuse would generally speaking be a fact in your request to be awarded spousal maintenance. You should consult with an experienced Arizona family law attorney be advised of your possible rights and obligations.

Spousal support, yes. The rest, no. At least not in Nebraska.

You can sue him for divorce on the basis of abuse. Depending on the situation that may get you more than half of the community property. Spousal support will depend, mostly, on your ability to support yourself. Talk with a local attorney about your chances of getting that.