Answer
Ag=172 pm, Fcc crystal structure ,1.9 electronegativity
Au=166 pm, Fcc crystal structure ,2.54 electronegativity
the atomic radius difference is close to 15
Not completely soluble since they do not satisfy the electronegativity requirement.
Work Step by Step
For a substitutional solid solution having complete solubility, the following conditions must be satisfied:
1. Atomic radius difference must be less than 15.
2. Both have same electronegativity.
3. Both have same crystal structure.
4.Both have same valence electrons.
Ag=172 pm, Fcc crystal structure ,1.9 electronegativity
Au=166 pm, Fcc crystal structure ,2.54 electronegativity
the atomic radius difference is close to 15
Not completely soluble since they do not satisfy the electronegativity requirement.
