WB JEE 2023 | Solid State Question 3 | Chemistry

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WB JEE 2023

MCQ (Single Correct Answer)

-0.25

What is the edge length of the unit cell of a body centred cubic crystal of an element whose atomic radius is 75 pm?

170 pm

175 pm

178 pm

173.2 pm

WB JEE 2022

MCQ (Single Correct Answer)

-0.25

The number of atoms in body centred and face centred cubic unit cell respectively are

2 and 4

4 and 3

1 and 2

4 and 6

WB JEE 2021

MCQ (Single Correct Answer)

-0.25

An element crystallises in a body centered cubic lattice. The edge length of the unit cell is 200 pm and the density of the element is 5.0 g cm^$$-$$3. Calculate the number of atoms in 100 g of this element.

2.5 $$\times$$ 10²³

2.5 $$\times$$ 10²⁴

5.0 $$\times$$ 10²³

5.0 $$\times$$ 10²⁴

WB JEE 2020

MCQ (Single Correct Answer)

-0.25

In the face centered cubic lattice structure of gold the closest distance between gold atoms is ('a' being the edge length of the cubic unit cell)

$$a\sqrt 2 $$

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

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

$$2\sqrt 2 a$$

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