This chapter is currently out of syllabus
1
JEE Main 2023 (Online) 10th April Evening Shift
+4
-1
Out of Syllabus

The correct relationships between unit cell edge length '$$a$$' and radius of sphere '$$r$$' for face-centred and body-centred cubic structures respectively are :

A
$$r=2 \sqrt{2} a$$ and $$\sqrt{3} r=4 a$$
B
$$r=2 \sqrt{2} a$$ and $$4 r=\sqrt{3} a$$
C
$$2 \sqrt{2} r=a$$ and $$\sqrt{3} r=4 a$$
D
$$2 \sqrt{2} r=a$$ and $$4 r=\sqrt{3} a$$
2
JEE Main 2023 (Online) 6th April Morning Shift
+4
-1
Out of Syllabus

A compound is formed by two elements $$\mathrm{X}$$ and $$\mathrm{Y}$$. The element $$\mathrm{Y}$$ forms cubic close packed arrangement and those of element $$\mathrm{X}$$ occupy one third of the tetrahedral voids. What is the formula of the compound?

A
$$\mathrm{XY}_{3}$$
B
$$\mathrm{X_3Y}_{2}$$
C
$$\mathrm{X_3Y}$$
D
$$\mathrm{X_2Y}_{3}$$
3
JEE Main 2023 (Online) 1st February Morning Shift
+4
-1
Out of Syllabus

Which of the following represents the lattice structure of $$\mathrm{A_{0.95}O}$$ containing $$\mathrm{A^{2+},A^{3+}}$$ and $$\mathrm{O^{2-}}$$ ions?

A
B only
B
A and B only
C
A only
D
B and C only
4
JEE Main 2023 (Online) 25th January Morning Shift
+4
-1
Out of Syllabus

A cubic solid is made up of two elements X and Y. Atoms of X are present on every alternate corner and one at the center of cube. Y is at $$\frac{1}{3}^{\mathrm{rd}}$$ of the total faces. The empirical formula of the compound is :

A
$$\mathrm{{X_2}{Y_{1.5}}}$$
B
$$\mathrm{{X_{3}}{Y_2}}$$
C
$$\mathrm{X{Y_{2.5}}}$$
D
$$\mathrm{{X_{2.5}}Y}$$
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