Gravitation on moon is `(1)/(6)` th of that on earth. When a balloon filled with hydrogen is released on moon then this

The value of g at moon is (1/6)^(th) of that on earth. A balloon filled with hydrogen will

A hydrogen balloon released on the moon would

What will happen to a hydrogen balloon released on the moon?

The acceleration due to gravity on the moon is 1/6th that on the earth. If the earth and the moon are assumed to have same density, then what is radius of the moon?