Final answer:
Helium takes up space by conforming to ideal gas behavior and filling the volume of the container it is placed in.
Explanation:
Helium takes up space as it exhibits properties of a gas and conforms to the principles of ideal gas behavior. When helium is placed in a vessel that allows expansion beyond its initial volume, such as a balloon or a container with a movable piston, it fills the available space, demonstrating that it has volume.
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