a solid ab has a rock salt structure if radius of cation a

A solid $$AB$$ has a rock salt structure. If radius of cation $${A^ + }$$ is $$120\,pm,$$ what is the minimum value of radius of $${B^ - }\,anion?$$

A. 120$$\,pm$$

B. 240$$\,pm$$

C. 290$$\,pm$$

D. 360$$\,pm$$

Answer : 290$$\,pm$$

Solution :
$$\eqalign{ & {\text{Limiting ratio}}, \cr & \frac{{{r_{{A^ + }}}}}{{{r_{{B^ - }}}}} = 0.414 \cr & {r_{{B^ - }}} = \frac{{{r_{{A^ + }}}}}{{0.414}} \cr & \,\,\,\,\,\,\,\,\,\, = \frac{{120}}{{0.414}} \cr & \,\,\,\,\,\,\,\,\,\, = 290\,pm \cr} $$

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Physical Chemistry >> Solid State

Releted Question 1

$$CsBr$$ has $$bcc$$ structure with edge length 4.3. The shortest inter ionic distance in between $$C{s^ + }$$ and $$B{r^ - }$$ is :

A. 3.72

B. 1.86

C. 7.44

D. 4.3

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Releted Question 2

The coordination number of a metal crystallizing in a hexagonal close-packed structure is

A. 12

B. 4

C. 8

D. 6

View Answer

Releted Question 3

In a solid $$‘AB’$$ having the $$NaCl$$ structure, $$'A’$$ atoms occupy the corners of the cubic unit cell. If all the face-centered atoms along one of the axes are removed, then the resultant stoichiometry of the solid is

A. $$A{B_2}$$

B. $${A_2}B$$

C. $${A_4}{B_3}$$

D. $${A_3}{B_4}$$

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Releted Question 4

A substance $${A_x}{B_y}$$ crystallizes in a face centred cubic $$(FCC)$$ lattice in which atoms $$'A'$$ occupy each corner of the cube and atoms $$'B'$$ occupy the centres of each face of the cube. Identify the correct composition of the substance $${A_x}{B_y}$$

A. $$A{B_3}$$

B. $${A_4}{B_3}$$

C. $${A_3}B$$

D. Compostion cannot be specified

View Answer

A solid $$AB$$ has a rock salt structure. If radius of cation $${A^ + }$$ is $$120\,pm,$$ what is the minimum value of radius of $${B^ - }\,anion?$$

Releted MCQ Question on
Physical Chemistry >> Solid State

$$CsBr$$ has $$bcc$$ structure with edge length 4.3. The shortest inter ionic distance in between $$C{s^ + }$$ and $$B{r^ - }$$ is :

The coordination number of a metal crystallizing in a hexagonal close-packed structure is

In a solid $$‘AB’$$ having the $$NaCl$$ structure, $$'A’$$ atoms occupy the corners of the cubic unit cell. If all the face-centered atoms along one of the axes are removed, then the resultant stoichiometry of the solid is

A substance $${A_x}{B_y}$$ crystallizes in a face centred cubic $$(FCC)$$ lattice in which atoms $$'A'$$ occupy each corner of the cube and atoms $$'B'$$ occupy the centres of each face of the cube. Identify the correct composition of the substance $${A_x}{B_y}$$

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Solid State

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A solid $$AB$$ has a rock salt structure. If radius of cation $${A^ + }$$ is $$120\,pm,$$ what is the minimum value of radius of $${B^ - }\,anion?$$

Releted MCQ Question on Physical Chemistry >> Solid State

$$CsBr$$ has $$bcc$$ structure with edge length 4.3. The shortest inter ionic distance in between $$C{s^ + }$$ and $$B{r^ - }$$ is :

The coordination number of a metal crystallizing in a hexagonal close-packed structure is

In a solid $$‘AB’$$ having the $$NaCl$$ structure, $$'A’$$ atoms occupy the corners of the cubic unit cell. If all the face-centered atoms along one of the axes are removed, then the resultant stoichiometry of the solid is

A substance $${A_x}{B_y}$$ crystallizes in a face centred cubic $$(FCC)$$ lattice in which atoms $$'A'$$ occupy each corner of the cube and atoms $$'B'$$ occupy the centres of each face of the cube. Identify the correct composition of the substance $${A_x}{B_y}$$

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Solid State