Question

plzz answers the question . be a brainliest.

Answer 1

if a object scattered then we should collect with magnet if it is of iron
or use foil

Answer 2

Gold has very high malleability so it can be spread out till it becomes few atoms thick.
If experiment was conducted is any other metal then the foil would be thick and the alpha particle would bounce back most of the time or would be absorbed instead of passing through the foil.
I hope you understood!!