No, not unless the firearm has been "de-milled"- permanently changed to prevent it from firing. That usually means cutting the frame into 3 pieces with a cutting torch.
No
You can't really "check online" but if you qualify to own a firearm anywhere in the U.S. you can own one in Florida. Basically, you have to be a non-felon and have disqualifying misdemeanors.
No.
No
No
No. There is no state were a felon may own any firearm.
can a convicted felon's wife own a firearm that is not in his home
Yes.
Nowhere in the US
No.
You'd be hard-pressed to find a felon in the military
No. Felons may not own, possess, or have access to firearms - no distinction in the law is made between violent and non-violent felons.