Single Choice

The arrangement of the first two layers, one above the other, in hcp and ccp arrangement is:

Aexactly the same in both cases
Correct Answer
Bpartly same and partly different
Cdifferent from each other
Dnothing definite

Solution

The arrangement of the first two layers, one above the other, in hcp and ccp arrangement is exactly the same in both cases. It is an AB type.

The arrangement of the third layer in hcp is ABA type. The overall arrangement becomes ABAB type. The arrangement of the third layer, one above the other, in ccp is ABC type. The overall arrangement becomes ABCABC type.

Hence, the correct option is ( A )


SIMILAR QUESTIONS

Solid State

Stacking (a pile) of square close packed layer gives rise to :

Solid State

A metallic crystal crystallizes into a lattice containing a sequence of layers $$ABABAB$$.... Any packing of spheres leaves out voids in the lattice. What percentage by volume of this lattice is empty space ?

Solid State

The number of atoms present in a hexagonal close-packed unit cell is :

Solid State

The unit cell present in ABAB, closest packing of atoms is :

Solid State

Hexagonal close packing is found in crystal lattice of:

Solid State

Potassium hexachloroplatinate (IV), $${K}_{2}[Pt{ Cl }_{ 6 }]$$ adopts anti-fluorite crystal structure. The correct information(s) about ideal $${K}_{2}[Pt{ Cl }_{ 6 }]$$ crystal is/are

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