An example of a non – stoichiometric compound is
Fe3O4 is a non – stoichiometric compound because in it, the ratio of the cations to the anions becomes different from that indicated by the chemical formula.
What is the coordination number of sodium in Na2O?
In zinc blende structure, the coordination number of Zn2+ ion is
In the calcium fluoride structure, the coordination number of the cation and anion are respectively
When a certain crystal was studied by the Bragg technique using X – rays of wavelength 229 pm, an X – ray reflection was observed at an angle of 230 20’. What is the corresponding interplanar spacing? [sin (23020’) = 0.396]
Potassium fluoride has NaCl type structure. What is the distance between K+ and F- ions if cell edge is a cm?
Which defect causes decreases in the density of crystal?
The correct statement regarding F – centre is
Schottky defect in crystals is observed when
Frenkel defect is caused due to
A pure crystalline substance, on being heated gradually, first forms a turbid looking liquid and then the turbidity completely disappears. This behavior is the characteristic of substances forming.