Answer:
Most similar- Al
Least similar- F
Explanation:
From our knowledge of the periodic table, it is already clear that elements in the same group in the periodic table share certain similarities in physical and chemical properties.
Since Indium and aluminium belong to the same group in the periodic table, they will share a similarity in their boiling points.
Florine is a non metal, it is expected to be least similar to indium in physical properties.
