Question

(ii)Explain hume-Rothery rule regarding alloy formation.​

Answer 1

Hume - Rothery rules :-

foe substitutional solid solution -

1. the differences b/w radius of solute of solvent should be less than 15 % .
2. The crystal structure of solute and solvent should be similar .
3. The solute particles should be completely dissolved in solvent .
4. In the solution electronegativity of solute and solvent should be similar .

for interstitial solid solution :-

1. The differences between radius of solute and solvent should be more then 15% .
2. the e.n should be similar .
3. the valance of both elements ( solute and solvent ) should be equal .