Of the three states of water(ice, liquid, and water vapor), in which state are the intermolecular forces the strongest? In which state are they the weakest

The intermolecular forces are strongest when it’s solid because their molecules are close to each other. The state in which the intermolecular forces are the weakest is when its water vapor because the molecules are more free and it’s gas like

The activity series is shown in the attached picture. if the element is below the other, then you can displace the other. following the activity series as a guide, the reactions are as follows: nickel and aluminum chloride3 ni + 2 alcl₃  → 3 nicl₂ + 2 albarium and copper bromideba + cubr  →  no reaction because cu is less oxidizable than bapotassium nitrate and aluminum3 kno₃ + al  → al(no₃)₃ + 3 ksodium phosphate and zincnaso₄ + zn  → znso₄ + na