WB JEE 2018 | Solid State Question 6 | Chemistry

WB JEE 2018

MCQ (Single Correct Answer)

-0.33

A compound formed by elements X and Y crystallises in the cubic structure, where X atoms are at the corners of a cube and Y atoms are at the centre of the body. The formula of the compounds is

XY₂

X₂Y₃

XY₃

WB JEE 2017

MCQ (Single Correct Answer)

-0.5

In a close-packed body-centred cubic lattice of potassium, the correct relation between the atomic radius (r) of potassium and the edge-length (a) of the cube is

$$r = {a \over {\sqrt 2 }}$$

$$r = {a \over {\sqrt 3 }}$$

$$r = {{\sqrt 3 } \over 2}a$$

$$r = {{\sqrt 3 } \over 4}a$$

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