1
MHT CET 2021 20th September Morning Shift
+1
-0

An element (molar mass 180 ) has BCC crystal structure with density $$18 \mathrm{~g} \mathrm{~cm}^{-3}$$. What is the edge length of unit cell?

A
$$\sqrt[3]{23.2} \times 10^{-24} \mathrm{~cm}$$
B
$$\sqrt[3]{12.6} \times 10^{-24} \mathrm{~cm}$$
C
$$\sqrt[3]{33.2} \times 10^{-8} \mathrm{~cm}$$
D
$$\sqrt[3]{22.6} \times 10^{-8} \mathrm{~cm}$$
2
MHT CET 2020 16th October Morning Shift
+1
-0

A metallic element crystallises in simple cubic lattice. If edge length of the unit cell is $$3\mathop A\limits^o$$, with density $$8 \mathrm{~g} / \mathrm{cc}$$, what is the number of unit cells in $$100 \mathrm{~g}$$ of the metal?

(Molar mass of metal $$=108 \mathrm{~g} / \mathrm{mol}$$ )

A
$$1.33 \times 10^{20}$$
B
$$2.7 \times 10^{22}$$
C
$$2 \times 10^{24}$$
D
$$5 \times 10^{23}$$
3
MHT CET 2020 16th October Morning Shift
+1
-0

A compound has fcc structure. If density of unit cell is $$3.4 \mathrm{~g} \mathrm{~cm}^{-3}$$, what is the edge length of unit cell?

(Molar mass $$=98.99$$)

A
8.780 $$\mathop A\limits^o$$
B
6.083 $$\mathop A\limits^o$$
C
5.783 $$\mathop A\limits^o$$
D
7.783 $$\mathop A\limits^o$$
4
MHT CET 2020 16th October Morning Shift
+1
-0

Xenon crystallises in fcc lattice and the edge length of unit cell is 620 pm. What is the radius of Xe atom?

A
438.5 pm
B
219.2 pm
C
265.5 pm
D
536.9 pm
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