Argentina owns zero in Antarctica. Its claim overlaps other claims. All claims are held in abeyance by the Antarctic Treaty (1961).
No, however, Argentina claims a sector of Antarctica called Argentine Antarctica: almost a million square kilometres of land.
Argentina is north of Antarctica, as is every other country on earth.
its not
No
None.
None.
Argentina, Australia, Antarctica are in the Southern Hemisphere
No.
You take a boat.
Your answer depends on your starting point in Argentina, your ultimate destination in Antarctica, and the speed of your boat.
Australia claims a slice of Antarctica, but does not own it. There are other claims, and no country with claims owns any part of Antarctica.
none