Answer
Verified
394.5k+ views
Hint: A unit cell that has a lattice point at every face centre in addition to the lattice point at every corner is called a face-centred cubic unit cell. In the case of \[NaCl\], the ratio of chloride to the ratio of sodium ions is 1:1.
Complete step by step answer:
In the case of \[NaCl\], the structure is a rock salt type structure with coordination number being in a ratio of 6:6 which means that there are 6 chloride ions present on the 6 faces of the face centred cubic system and 6 Na+ ions occupy the octahedral voids in the lattice system. There are many compounds that have a similar structure as the sodium chloride structure. The ratio of radius range of anions and cations ranges between 225-414 nm. Those structures which have a similar structure to that of \[NaCl\] include different alkyl halides, oxides of different metals, etc. In the case of a face-centred cubic system, the coordination number will be 12 and the distance between the two nearest atoms will be $\dfrac{{a\sqrt 2 }}{2}$ . The relation between the radius and side length in such a system is $r = \frac{a}{{2\sqrt 2 }}$ .
Thus, the correct option is (B) Face-centred cubic.
where red spheres represent $Cl^-$ and green ones are for $Na^+$
Note:
In a face centred cubic system, along the face diagonal, all the atoms touch each other and the length of the face diagonal is $a\sqrt 2 $ . The number of atoms per unit cell in FCC lattice is 4 and the packing efficiency is 74% with void space of 26%.
Complete step by step answer:
In the case of \[NaCl\], the structure is a rock salt type structure with coordination number being in a ratio of 6:6 which means that there are 6 chloride ions present on the 6 faces of the face centred cubic system and 6 Na+ ions occupy the octahedral voids in the lattice system. There are many compounds that have a similar structure as the sodium chloride structure. The ratio of radius range of anions and cations ranges between 225-414 nm. Those structures which have a similar structure to that of \[NaCl\] include different alkyl halides, oxides of different metals, etc. In the case of a face-centred cubic system, the coordination number will be 12 and the distance between the two nearest atoms will be $\dfrac{{a\sqrt 2 }}{2}$ . The relation between the radius and side length in such a system is $r = \frac{a}{{2\sqrt 2 }}$ .
Thus, the correct option is (B) Face-centred cubic.
where red spheres represent $Cl^-$ and green ones are for $Na^+$
Note:
In a face centred cubic system, along the face diagonal, all the atoms touch each other and the length of the face diagonal is $a\sqrt 2 $ . The number of atoms per unit cell in FCC lattice is 4 and the packing efficiency is 74% with void space of 26%.
Recently Updated Pages
Basicity of sulphurous acid and sulphuric acid are
Three beakers labelled as A B and C each containing 25 mL of water were taken A small amount of NaOH anhydrous CuSO4 and NaCl were added to the beakers A B and C respectively It was observed that there was an increase in the temperature of the solutions contained in beakers A and B whereas in case of beaker C the temperature of the solution falls Which one of the following statements isarecorrect i In beakers A and B exothermic process has occurred ii In beakers A and B endothermic process has occurred iii In beaker C exothermic process has occurred iv In beaker C endothermic process has occurred
What is the stopping potential when the metal with class 12 physics JEE_Main
The momentum of a photon is 2 times 10 16gm cmsec Its class 12 physics JEE_Main
How do you arrange NH4 + BF3 H2O C2H2 in increasing class 11 chemistry CBSE
Is H mCT and q mCT the same thing If so which is more class 11 chemistry CBSE
Trending doubts
Difference Between Plant Cell and Animal Cell
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
Change the following sentences into negative and interrogative class 10 english CBSE
Summary of the poem Where the Mind is Without Fear class 8 english CBSE
Give 10 examples for herbs , shrubs , climbers , creepers
Write an application to the principal requesting five class 10 english CBSE
What organs are located on the left side of your body class 11 biology CBSE
What is the z value for a 90 95 and 99 percent confidence class 11 maths CBSE