{:("Column -I","Column -II"),("Tupe of packing","void volume"),(A.hcp,p . 0.38),(B. c cp,q . 0.48),(C. b c c ,r 0.22),(D. sc ,s. 0.66),("E. dx (Diamond cubic)",):}

{:("Column -I","Column -II"),("Tupe of packing","void volume"),(A.hcp,

1.	{:("Column -I","Column -II"),("Tupe of packing","void volume"),(A.hcp,p . 0.38),(B. c cp,q . 0.48),(C. b c c ,r 0.22),(D. sc ,s. 0.66),("E. dx (Diamond cubic)",):}
Answer» Solution :(a-r,b-r) HCP and ccp, closest PACKED structure, Volume occuped =0.78 Void volume=100.78=0.22 (c-p) For BCC, volume occupied=0.62 void volume=1-0.62=0.38 (d-q) For sc, volume occupied=0.52 void volume =1-0.52=0.48 (e-s) For dc, volume occupied=0.34 void volume=1-0.34=0.66