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Chemistry · Solid State

NEET (UG) 2023 — Question 55

A compound is formed by two elements A and B. The element B forms cubic close packed structure and atoms of A occupy 1/31 / 3 of tetrahedral voids. If the formula of the compound is AxByA_{x} B_{y}, then the value of x+y\mathrm{x}+\mathrm{y} is in option

  1. Option A:

    4

  2. Option B:

    3

  3. Option C:

    2

  4. Option D:

    5

    Correct

Answer: D

Step-by-step solution

Number of atoms of element B is N

So, the number of atoms of element A is 13×2 N\frac{1}{3} \times 2 \mathrm{~N} ∴\therefore \quad

The formula of the compound is A23 BN=A2 B3\mathrm{A}_{\frac{2}{3}} \mathrm{~B}_{\mathrm{N}}=\mathrm{A}_2 \mathrm{~B}_3

 So, x=2y=3∴x+y=5\begin{aligned} & \text { So, } x=2 \\ & \quad y=3 \\ & \therefore \quad x+y=5 \end{aligned}

Answer key and solution verified before publishing.

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Exam
NEET (UG) 2023
Paper
2023 paper
Subject
Chemistry
Chapter
Solid State
Topic
Packing in Ionic Solids - all types

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