The 7th Horcrux in the Harry Potter series is Harry Potter himself. In "Harry Potter and the Deathly Hallows," it is revealed that Voldemort unintentionally made Harry into a Horcrux when he tried to kill him as a baby. This makes Harry the final Horcrux that must be destroyed in order to defeat Voldemort. **

In the Harry Potter series, a Horcrux is an object in which a dark wizard or witch has hidden a fragment of their soul in order to achieve immortality. J.K. Rowling's idea for Horcruxes was to create a powerful and sinister form of dark magic that allowed the villain, Lord Voldemort, to split his soul into multiple pieces and hide them in various objects, making it nearly impossible to kill him. This concept added a layer of complexity and darkness to the story, as Harry and his friends had to search for and destroy these Horcruxes in order to defeat Voldemort. **

The Basilisk in Harry Potter did not destroy the Horcrux because it was actually a Horcrux itself. In the series, it is revealed that the Basilisk's venom is one of the few substances that can destroy a Horcrux, but since the Basilisk was also a Horcrux, it would not have been able to destroy itself. This is why the Basilisk venom was used to destroy other Horcruxes, such as Tom Riddle's diary, but not the Basilisk itself. **

In the Harry Potter series, the Horcrux inside Harry dies because it is a fragment of Voldemort's soul that cannot survive once Voldemort himself is killed. When Voldemort is defeated, all the pieces of his soul, including the one in Harry, are destroyed. In the film, Harry Potter does not die because he is not a true Horcrux; he was only a vessel for a piece of Voldemort's soul, which is different from being a Horcrux created intentionally to store a piece of soul. **

No, Harry Potter would not necessarily be invulnerable if he were a Horcrux. While Horcruxes are intended to make the object containing a piece of a dark wizard's soul nearly indestructible, they are not completely invulnerable. In the Harry Potter series, we see that Horcruxes can be destroyed through specific means, such as basilisk venom or Fiendfyre. Therefore, if Harry were a Horcrux, he would still be vulnerable to these and other destructive forces. **

Yes, Harry was unintentionally made into a Horcrux by Voldemort. When Voldemort tried to kill Harry as a baby, a piece of his soul latched onto Harry, making him a Horcrux without Voldemort's knowledge. This connection between Harry and Voldemort played a significant role in the final battle between the two, ultimately leading to the destruction of the Horcrux inside Harry. **

In the Harry Potter series, a Horcrux is an object in which a dark wizard has hidden a fragment of their soul to achieve immortality. The Killing Curse, also known as Avada Kedavra, is a spell that causes instant death to the victim. Since the Horcrux is an object containing a piece of the wizard's soul, it is linked to their life force. When the Killing Curse is cast on a living being that also happens to be a Horcrux, it can destroy both the living being and the piece of the soul contained within the Horcrux, effectively destroying the Horcrux. **

Voldemort could have killed the Horcrux Harry by using a killing curse, such as Avada Kedavra, which is a powerful and deadly spell. Since Harry was a Horcrux, he would have been able to survive the killing curse, but the piece of Voldemort's soul within him would have been destroyed. This would have allowed Voldemort to finally become mortal and vulnerable, making it possible for him to be defeated. **