Close Packing In 3d

The difference in coordination numbers of hexagonal close packing in 3D and square close packing in 2-D, of identical spheres is:

Calculation Of The Contribution Of Atoms Present At Different Lattice Sites|Calculation Of Number Of Atoms|Close Packed Structures|Close Packing in Two Dimensions|Close Packing in Three Dimensions|Summary

Close Packing in Crystal (i) 1D - Close Packing,(ii) 2D - Close Packing,(a) Square Close Packing, (b) Hexagonal Close Packing,(iii) 3D - Close Packing Seven Types OF Crystal System (Trick to Remember)

Interstitial Voids||Planar Voids ||Triangular|| Square Planar Voids||Non Planar Voids ||Tetrahedral|| Octahedral||Cubical Voids||Ratio for each type OF void||Close packing in 3D||ABAB Packing||HCP Packing ABCABC||CCP Packing

Discussion OF DPP-2 || Close Packing OF Atoms || Tetrahedral Void & Octahedral Void

(a) Compare the packing efficiency of square close packing, hexagonal close packing and cubic close packing. (b) Give the values of packing efficiency in (i) hcp or ccp and (ii) body-centred cubic crystals.

Match the type of packing given in Column I with the items given in Column II {:( " Column I " , "Column II") , ( "(i) Square close packing in two dimensions" , "(a) Triangular voids" ),( "(ii) Hexogonal close packing in two dimensions " , "(b) pattern of spheres is repeated in every fouth layer") , ( " (iii) Hexongaonal close packing in three dimensions" , "(c) Coordination number 4" ),( " (iv) Cubic close packing in three dimensions " , "(d) Pattern of sphere is repeated in alternate layers"):}

Mathc the type of packing given in Column I with the itmes given in Column II. Column -I (i) square close packing in two dimensions (ii) Hexagonal close packing in two dimensions (iii) Hexagonal close packing in three dimensions (iv) Cubic close packing in three dimensions Column -II (a) Triagnular voids (b) Pattern of spheres is reapted in every fourth layer (c) Coordination number -4 (d) Pattern of sphere is reapeated i alternate layers.