It meant that Harry would have to be hit by a killing curse to kill that piece of soul. Having a piece of Voldemort's soul inside him was the reason he could speak parseltounge and could read Voldemort's mind. When that was removed from him he could no longer understand or speak parseltounge.
if you mean the 7th horcrux, well it was harry Potter hope this helps
I guess you mean "Voldemort"? That's because Voldemort tried to kill Harry, but when he did, he actually made a Horcrux. Harry is the horcrux, but he is Harry as well. The Horcrux inside Harry gets killed in the last book.
Yes, the horcrux inside of Harry Potter
No, only the Horcrux inside him was.
No, but the diary Horcrux, was destroyed.
The Ring
yes
The diary
No, he didn't die because he was Horcrux. Had he not been a Horcrux the killing curse would have killed Harry, instead of just the Horcrux.
So you mean how was the horcrux in Harry destroyed? Well voldimort tried to kill him but instead destroyed the horcrux inside Harry, so Harry was no longer one of voldimorts horcruxes. This happened in Harry potter 7
It depends what Horcrux your talking about, they do find them all and destroy them all though.
The reason he's an unintended horcrux is because the night he tried to kill Harry, he put a piece of his soul inside him(how you make a horcrux). He didn't mean to, though.