Victini: Liberty Island (With the liberty pass through events)
Zekrom: N's Castle (White Only)
Reshiram: N's Castle (Black Only)
Cobalion: Mistralton Cave
Terrakion: Victory Road
Virizion: Pinwheel Forest
Landorus: With thundurus and tornadus in your party, Abundant Shine
Kyurem: Giant Chasm
Thundurus: All badges, route 10, route 7, then roaming (White Only)
Tornadus: All badges, route 10, route 7, then roaming (Black Only)
And that's about it! Hope this helps.
catch them
You can catch Zekrom in Pokemon White and Reshiram in Pokemon Black. They are version exclusive legendaries so the only ways you could get both is through hacks or trading with someone.
You can catch legendaries in any Pokemon game! (At least after you know where they're hiding!)
none
go to this page http://www.serebii.net/diamondpearl/legendaries.shtml this page has all the legendaries you can normally catch in in Pokemon diamond/pearl all other legendaries you have to transfer from a 3rd generation game
arceus
The Pokemon Kyurem is one of the legendaries in both Pokemon Balck and Pokemon White. It can be caught at the Giant Chasm. It is a dragon and ice type Pokemon and you catch it at level 70. Hope this helps. :)
Zekrom is the main legendary in Pokemon white, however you can also catch Thundurus, Cobalion, Terrakion, Virizion, Landorus, and Kyurem. Victini is available through Wifi. The legendaries that are only available in Pokemon Black are Reshiram, Tornadus, Cobalion, Terrakion, Virizion, and Kyurem.
Not including the legendaries and special pokemon ( ones that you can only catch once ) feebas is the hardest and rarest pokemon to catch
Pokemon Platinum because you can catch more legendaries!
If you mean legendaries, then no.
no but you can catch lots of legendaries