Question

Does the size of a magnet affect its attractive properties?

Answer 1

Usually, the physical and chemical properties of the particles or the nano-particles (small in size) of the magnet largely depend upon the synthesis method and on the chemical structure. Generally, the range of the particles is from 1 to 100 nm in size that may display the super-para-magnetism.
So, the attractive properties of the magnet do not depend upon its size.