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What is the coordination number in a square close packed structure in two dimensions? - Chemistry

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प्रश्न

What is the coordination number in a square close packed structure in two dimensions?

विकल्प

  • 2

  • 3

  • 4

  • 6

MCQ
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उत्तर

4

Explanation:

Coordination number in a square closed packed structure in two dimensions is equal to 4 is shown as:

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Close Packed Structures of Solids
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अध्याय 1: Solid States - Exercises [पृष्ठ ५]

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एनसीईआरटी एक्झांप्लर Chemistry [English] Class 12
अध्याय 1 Solid States
Exercises | Q I. 27. | पृष्ठ ५

संबंधित प्रश्न

What is the two dimensional coordination number of a molecule in square close packed layer?


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?


A compound is formed by two elements M and N. The element N forms ccp and atoms of M occupy 1/3rdof tetrahedral voids. What is the formula of the compound?


How many lattice points are there in one unit cell of the following lattice?

Face-centred cubic


The coordination number of AB having rock salt geometry is ____________.


Hexagonal close packed arrangement of ions is described as ____________.


In NaCl structure ____________.


Which of the following statement is not true about the hexagonal close packing?


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) Hexagonal close packing
in two dimensions
(b) Pattern of spheres is
repeated in every fourth layer
(iii) Hexagonal 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

With the help of a labelled diagram show that there are four octahedral voids per unit cell in a cubic close packed structure.


The packing efficiency of the two dimensional square unit cell shown below is:


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?


Co-ordination number of sodium ion Na+ in Nacl is:-


Which of the following is frenkal effect.


The right options for the number of tetrahedral and octahedral voids in the hexagonal primitive unit cells is ______.


The right option for the number of tetrahedral and octahedral voids in hexagonal primitive unit cell is ______.


Ionic radii of cation A+ and anion B- are 102 and 181 pm respectively. These ions are allowed to crystallize into an ionic solid. This crystal has cubic close packing for B-. A+ is present in all octahedral voids. The edge length of the unit cell of the crystal AB is ______ pm. (Nearest integer)


The density of a pure substance 'X' whose atoms pack in cubic close pack arrangement is 1 g/cc. If all tetrahedral voids are occupied by 'Y' atoms. The value of '3a' is ______ g/cc, if the density of resulting solid is 'a' g/cc.

[Given: Atomic mass (X) = 30 g/mol, (Y) = 20 g/mol]


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