In the first layer of 2- dimensional packing ,what is the basic repeating unit in the close packing?

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Solution

In the first layer of 2- dimensional packing , the basic repeating unit in the close packing is the atom or particle.

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Similar questions

	Column I		Column II
(i)	Square close packing in two dimension	(p)	Triangular voids
(ii)	Hexagonal close packing in two dimensions	(q)	Pattern of spheres is repeated in every fourth layer
(iii)	Hexagonal close packing in three dimension	(r)	Coordination number=4
(iv)	Cubic close packing in three dimension	(s)	Pattern of spheres is repeated in alternate layers

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