Question

Why are powdered substances more than effective absorbent than their crystalline forms explain them ?? And follow me please ✌✌✌​

Answer 1

because the powdered substances have more surface area than crystalline form .

Having more surface area makes them more reactive because it reduces their ionization and electron gain enthalpy .

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Answer 2

Explanation:

Powdered substances are more effective adsorbents than their crystalline  forms because when a substance is powdered then the surface area increases and physisorption is directly proportional to surface area of adsorbent.

OR..

Adsorption is a surface phenomenon.The extent of adsorption depends on the surface area. Therefore, adsorption is directly proportional to the surface area.Increase in the surface area of the adsorbent, increases the total amount of gas adsorbed.A finely divided substance like nickel, platinum & porous substances like charcoal ,silica gel provides large surface area but crystalline substances has less surface as compared to finely divided substances, as a result  powered substances are more effective adsorbents than their crystalline forms.