C.
either $$s$$ - block elements or $$d$$ - block elements
D.
only $$d$$ - block elements.
Answer :
only $$d$$ - block elements.
Solution :
In non stoichiometric defects ratio of cation and anion is not same that is represented by chemical ideal formula, this is due to variable oxidation nos of cation. Transition elements show variable oxidation nos.
Releted MCQ Question on 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 :
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 $${A_x}{B_y}$$