Question:medium

Which among the following is NOT a factor in Hume-Rothery rules of formation of substitutional solid solutions

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Remember the four Hume-Rothery rules using the mnemonic: Size, Structure, Valency, Electronegativity (S-S-V-E).
- Size difference $< 15\%$
- Same crystal structure
- Same valency (preferably)
- Similar electronegativity (low affinity for compound formation)
Updated On: Jul 7, 2026
  • crystal structure
  • relative size
  • chemical affinity
  • chemical Reactivity
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The Correct Option is D

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