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AIIMS 201826 May

Exam: AIIMS
Year: 2018
Date: 26 May
Subject: Chemistry
Chapter: Solid State

AIIMS 2018 · 26 May · Chemistry · Solid State

In HCP of A, (1)/(3) of tetrahedral voids are occupied by B . What...

In

\mathrm{HCP}

of

A, \frac{1}{3}

of tetrahedral voids are occupied by

B

. What is the formula of the compound?

Options

A $A_2 B_3$
B $A_3 B_2$
C $A B_3$
D $A_2 B$

Correct answer

B. $A_3 B_2$

Step-by-step solution

No. of atoms

(A)=6(h c p)

, no. of

B

atoms

=\frac{1}{3} \times 12=4

Hence, the formula of the compound is

A_6 B_4

or

A_3 B_2

.

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