1
BITSAT 2022
MCQ (Single Correct Answer)
+3
-1

Which compound has antifluorite structure?

A
MnO4
B
Na2O
C
Na2O2
D
Li2O2
2
BITSAT 2020
MCQ (Single Correct Answer)
+3
-1

An element occurs in two crystalline forms $$\alpha$$ and $$\beta$$. The $$\alpha$$-form has an fcc with $$a = 3.68\,\mathop A\limits^o $$ and $$\beta$$ form has a bcc with $$a = 2.92\,\mathop A\limits^o $$. Calculate the ratio of their densities.

A
1 : 1
B
1 : 2
C
2 : 1
D
2 : 3
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