Advertisements
Advertisements
Question
Which of the following is not true about the ionic solids?
Options
Bigger ions form the close packed structure.
Smaller ions occupy either the tetrahedral or the octahedral voids depending upon their size.
Occupation of all the voids is not necessary.
The fraction of octahedral or tetrahedral voids occupied depends upon the radii of the ions occupying the voids.
Advertisements
Solution
The fraction of octahedral or tetrahedral voids occupied depends upon the radii of the ions occupying the voids.
Explanation:
The fraction of octahedral or tetrahedral voids occupied depends upon the radii of the ions present at the lattice points. As we know the radii of octahedral or tetrahedral void is related to radii of atoms (r) as Radius of octahedral void (R0) = 0.414 r.
Radius of tetrahedral void (R1 ) = 0.225 r Where, r = radius of bigger atom involved.
APPEARS IN
RELATED QUESTIONS
Give an example each of a molecular solid and an ionic solid.
Classify the following solids into different types:
a. Ammonium phosphate
b. Brass
c. S8 molecule
d. Diamond
A compound is made up of two elements X and Y and crystallizes in bcc structure. Atoms of X are present at the corners of the cube. Atoms of Y are present at the centre of the cube. The formula of the compound is ______.
Solid CO2 is an example of ____________.
Classify the following solid.
Diamond
Classify the following solid.
NaCl
Which of the following is TRUE about molecular solids?
Brass is an example of ____________.
Solid X is a very hard electrical insulator in solid as well as in molten state. It melts at extremely high temperature. Solid X is a ____________.
London forces are present in ____________.
An AB2 type structure is found in ____________.
Which of the following exists as covalent crystals in the solid state?
Which of the following is not the characteristic of ionic solids?
Which of the following cannot be regarded as molecular solid?
(i) SiC (Silicon carbide)
(ii) AlN
(iii) Diamond
(iv) I2
Calculate the angle at which first order reflection will occurs in an X-ray spectrometer when x ~ rays of wavelength \[\ce{1.54 \overset{\circ}{A}}\] are diffracted by the atoms of a crystal given that inter planer distance is \[\ce{0.04 \overset{\circ}{A}}\]
Graphite is a ______.
Mention the res of the following solid:
CO2
Quartz is which type of crystal?
