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What is Meant by the Term 'Coordination Number'? - Chemistry

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प्रश्न

What is meant by the term 'coordination number'?

उत्तर

The number of nearest neighbours of any constituent particle present in the crystal lattice is called its coordination number.

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अध्याय 1: The Solid State - Exercises [पृष्ठ ३०]

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एनसीईआरटी Chemistry [English] Class 12
अध्याय 1 The Solid State
Exercises | Q 4.1 | पृष्ठ ३०

संबंधित प्रश्न

Define the following term: Primitive unit cells


Name the parameters that characterize a unit cell.


Which of the following lattices has the highest packing efficiency (i) simple cubic (ii) body-centred cubic and (iii) hexagonal close-packed lattice?


An ionic crystal lattice has limiting value of radius ratio as 0.414 to 0.732; the co-ordination number of its cation is _______.

(A) 6

(B) 4

(C) 3

(D) 12


Calculate the number of atoms present in 2 gram of crystal which has face-centred cubic
(FCC) crystal lattice having edge length of 100 pm and density 10 gcm−3


An ionic crystal lattice has `r^+/r` radius ratio of 0.320, its coordination number is __

(a) 3

(b) 4

(c) 6

(d) 8


In the complexes `[Fe(CN)_6]^(3-)` and `[pt(en) (H_2O)_2(NO_2 (Cl)^(2+)]``the respective oxidation numbers of central metal atoms are

1) +3 and +4

2) +6 and + 4

3) +6 and +3

4) +3 and + 3


For a crystal of sodium chloride, state:

1) The type of lattice in which it crystallises

2) The coordina~ion number of each sodium ion and chloride ion in the crystal lattice.

3) The number of sodium ions and chloride ions present in a unit cell of sodium chloride.

4) The structural arrangement of the sodium chloride crystaL


How will you obtain pure potassium permanganate (KMnO4) crystals from its ore, pyrolusite? Give the steps involved and the reactions. 


Complete the following statement by selecting the correct alternative from the choices given: 

In a face-centered cubic lattice, atom (A) occupies the comer positions and atom (B) occupies the face centre positions. If one atom of (B) is missing from one of the face-centered points, the formula of the compound is:


A solid compound XY has NaCl structure. if the radius of the cation is 100 pm, the radius of the anion will be


The yellow colour in NaCl crystal is due to ____________.


Why ionic crystals are hard and brittle?


How many three-dimensional crystal lattices are possible?


AB crystallises in a body centred cubic lattice with edge length' a' equal to 387 pm The distance between two oppositely charged ions in the lattice is:


A particular solid is very hard and has a high melting point. In solid state, it is a non-conductor and in molten state, it is a conductor of electricity. Classify the solid ______.


How many unit cells are present in a cube-shaped ideal crystal of NaCI of mass 1.00 g? [Atomic masses : Na = 23, Cl = 35.5)


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