In a binary system A-B, εAA, εBB and εAB correspond to A-A, B-B and A-B bond energies respectively. The miscibility gap will occur, if
A. $${\varepsilon _{AB}}$$
B. $${\varepsilon _{AB}} < \frac{1}{2}\left( {{\varepsilon _{AA}} + {\varepsilon _{BB}}} \right)$$
C. $${\varepsilon _{AB}} = \frac{1}{2}\left( {{\varepsilon _{AA}} + {\varepsilon _{BB}}} \right)$$
D. $${\varepsilon _{AB}} < \frac{1}{4}\left( {{\varepsilon _{AA}} + {\varepsilon _{BB}}} \right)$$
Answer: Option A
This Question Belongs to Metallurgical Engineering >> Physics Of Metals In Metallurgy
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