1
WB JEE 2022
MCQ (Single Correct Answer)
+1
-0.25
Change Language

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

A
2 and 4
B
4 and 3
C
1 and 2
D
4 and 6
2
WB JEE 2021
MCQ (Single Correct Answer)
+1
-0.25
Change Language
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.
A
2.5 $$\times$$ 1023
B
2.5 $$\times$$ 1024
C
5.0 $$\times$$ 1023
D
5.0 $$\times$$ 1024
3
WB JEE 2020
MCQ (Single Correct Answer)
+1
-0.25
Change Language
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
$$a\sqrt 2 $$
B
$${a \over {\sqrt 2 }}$$
C
$${a \over {2\sqrt 2 }}$$
D
$$2\sqrt 2 a$$
4
WB JEE 2018
MCQ (Single Correct Answer)
+1
-0.33
Change Language
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
A
XY
B
XY2
C
X2Y3
D
XY3
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