A compound forms�hexagonal close-packed�structure. What is the total number of voids in 0.5 mol of it? How many of these are tetrahedral voids?
Number of close-packed particles = 0.5�x�6.022�x�1023�= 3.011�x�1023
�Therefore, number of octahedral voids = 3.011�x�1023�
�And, number of tetrahedral voids = 2�x�3.011�x�1023��=
�Therefore, total number of voids = 3.011�x�1023�+ 6.022�x�1023�=