No, however, Argentina claims a sector of Antarctica called Argentine Antarctica: almost a million square kilometres of land.
Argentina owns zero in Antarctica. Its claim overlaps other claims. All claims are held in abeyance by the Antarctic Treaty (1961).
Argentina is north of Antarctica, as is every other country on earth.
its not
No
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.
Argentina and Chile are among the nation states that claim territory in Antarctica. You can read more about these claims, some of which overlap, below.
The coastal regions and some of the surrounding islands near Argentina and Chile
chile argentina
none