it goes away but the smart thing to do is save the game be for you face any legend
If you made Zekrom faint before at N's Castle, Zekrom (or Reshiram for Black) will be at the top of Dragonspiral Tower.
No.
The legendary mascots for Pokemon Black is Reshiram the white dragon one. Pokemon White is Zekrom the black dragon one.
Zekrom in Pokemon White and Resharim in Pokemon Black.
No.
In Pokemon Black Version the legendary is Reshiram and Pokemon White its Zerkrom.The only way to get both is to transfer Zerkrom to Pokemon Black Version or Reshiram to Pokemon White Version.
The white legendary Pokémon is Reshiram, while the black legendary Pokémon is Zekrom. You can get Zekrom in the White version while you can get Reshiram in the Black Version.
there is no "white" legendary in pokemon white. its black ( and called zecrom) and in the top floor of N's castle and then after u VS N
There are 26 legendary Pokemon in Pokemon black/white version.
zekrom the legendary
on black and white? Reshiram (black) and Zekrom (white)
Black and White Kyruem.