Question 1 :
The edge length of a face centred cubic cell of an ionic substance is 508 pm. If the radius of the cation is 110 pm, the radius of the anions is

Question 2 :
In a face centred cubic lattice the number of nearest neighbours for a given lattice point are :

Question 4 :
Number of atoms in the unit cell of Na(bcc type crystal) and Mg(fcc type crystal ) are respectively

Question 8 :
Which of the following does not represent a type of crystal system?<br>

Question 11 :
In a cubic close packing of spheres in three dimensions, the co-ordination number of each sphere is :

Question 12 :
The phenomenon in which crystals on subjecting to a pressure or mechanical stress produce electricity is called :

Question 14 :
The phenomenon in which polar crystals on heating produce electricity is called :

Question 15 :
How many unit cells are present in {tex} 39 \mathrm { g } {/tex} of potassium that crystallises in body centred cubic structure? [At. wt. of {tex} \mathrm { K } = 39 {/tex} ]

Question 17 :
An ionic compound is expected to have tetrahedral structure if <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ead48a9381c2135355c6d14"> lies in the range of

Question 19 :
The number of atoms <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ead480286ab836963762e0f"> contained within a cubic cell is :

Question 20 :
How many number of atoms are there in a cube based unit cell having one atom on each corner and two atoms on each body diagonal of cube

Question 22 :
The number of hexagonal faces that are present in a truncated octahedron is

Question 23 :
Lithium metal crystallises in a body centred cubic crystal. If the length of the side of the unit cell of lithium is 351 pm, the atomic radius of the lithium will be :

Question 26 :
Metallic gold crystallises in fcc lattice with edge-length $4.070\mathring { A }&#160;$. Closest distance between gold atoms is:

Question 29 :
A substance $A_xB_y$ crystallizes in a face centred cubic (fcc) lattice in which atoms $A$ occupy each corner of the&#160;cube and atoms $B$ occupy the centres of each face of the&#160;cube. Identify the correct composition of the substance $A_xB_y$.

Question 30 :
The total number of atoms per unit cell in $fcc$ is:

Question 31 :
In a compound, atoms of element Y form ccp lattice and those of element X occupy $2/3^rd$ of tetrahedral voids. The formula of the compound will be:

Question 32 :
How many kinds of space lattices are possible in a crystal?<br/>

Question 33 :
Which of the following statement is not true about amorphous solids?

Question 34 :
The second order Bragg diffraction of X-rays with $\lambda =&#160;1.00 \mathring A$&#160;from a set of parallel planes in a&#160;metal occurs at an angle of $60^o$. The distance between the scattering planes in the crystal is (in $\mathring A$) :

Question 35 :
Match the column I having type of lattice point and its contribution to one unit cell in column II and mark appropriate choice.<br><table class="wysiwyg-table"><tbody><tr><td><br></td><td>Column I<br>(Lattice point)</td><td><br></td><td>column II<br>(Contribution to one unit cell)</td></tr><tr><td>(A)</td><td>Corner</td><td>(i)</td><td>1</td></tr><tr><td>(B)</td><td>Edge</td><td>(ii)</td><td>1/8</td></tr><tr><td>(C)</td><td>Face Cenre</td><td>(iii)</td><td>1/4</td></tr><tr><td>(D)</td><td>Body centre</td><td>(iv)</td><td>1/2</td></tr></tbody></table><blockquote><blockquote><blockquote><br></blockquote></blockquote></blockquote>

Question 37 :
The pattern of successive layers of ccp arrangement can be designated as:

Question 38 :
The density and edge length values for a crystallise elemens with $fcc$ lattice are $10 g$ $cm^{-3}$ and 400 pm, respectively. The number of unit cell in $32 g$ of this crystal is:

Question 39 :
A compound formed by elements $X$ and $Y$ crystallizes in a cubic structure, where $X$ is at the corners of the cube and $Y$ is at six face centers. What is the formula of the compound?

Question 40 :
An element crystalline in body centered cubic lattice has an edge of 500 pm. If its density is 4 g $cm^{-3}$, the atomic mass of the element (in g $mol^{-1}$) is:&#160;<div>(consider $N_A=6\times10^{23}$)&#160;<br/></div>