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What is formed when the electronegativities of atoms differ?

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What is formed when the electronegativities of atoms differ?

(a) Solid solutions

(b) Liquid solution

(c) Intermetallic compound

(d) Maraging steel

This question was posed to me by my school principal while I was bunking the class.

Origin of the question is Hume Rothery’s Rules, Types of Solid Solutions in section Solid Solutions & Crystallography of Engineering Material & Metallurgy

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Correct choice is (c) Intermetallic compound

Easiest explanation: According to Hume Rothery’s rules, the solute and solvent mist have similar electronegativities. If this difference is too large, the metals are inclined to form intermetallic compounds in place of solid solutions.

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