In an ionic crystal if the valancies of cation and anion are VC and VA and the coordination numbers of cation and anions are Nc and NA respectively, then the necessary condition for obtaining a stable crystal structure is
A. $$\frac{{{V_C}}}{{{N_C}}} = \frac{{{V_A}}}{{{N_A}}}$$
B. VC.VA = NC.NA
C. $$\frac{{{V_C}}}{{{N_A}}} = \frac{{{V_A}}}{{{N_C}}}$$
D. $$\frac{{{V_C}}}{{{V_A}}} = \frac{{\surd {N_C}}}{{\surd {N_A}}}$$
Answer: Option D
This Question Belongs to Metallurgical Engineering >> Physics Of Metals In Metallurgy
Related Questions on Physics of Metals in Metallurgy
When the wavelength of the incident X-Tay increases the angle of diffraction
A. decreases
B. increases
C. remains constant
D. shows no systematic variation
A. Burger vector and the dislocation line are Parallel to each other for screw dislocations
B. Burger vector and the dislocation line are perpendicular to each other for edge dislocations
C. Screw dislocations glide parallel to its Burger vector
D. Edge dislocations glide parallel to its Burger Vector
Join The Discussion