In a compound, atoms of element Y form c c p lattice and those of element X occupy 2 / 3^ rd of tetrahedral voids. The formula of the compound will be

Step-by-step solution

From the given data, we have Number of Y atoms in a unit cell =4 Number of X atoms in a unit cell =8 2 3 = 16 3 From the above we get the formula of the compound as X_ 16 / 3 Y₄ or X₄ Y₃