KVPY SX SB Exam 05-Nov-2017 Question Paper

Question : 110 of 120

Marks: +1, -0

A two-dimensional solid pattern formed by two different atoms X and Y is shown below. The black and white squares represent atoms X and Y, respectively. The simplest formula for the compound based on the unit cell from the pattern is

$XY_8$
$X_4Y_9$
$XY_2$
$XY_4$

Validate

Solution:

The unit cell of the above pattern will consist of 8 white square and 1 black square i.e. it will form centre unit cell.
∴ No. of white square Y = 8
No. of black square X = 1
∴ Formula

XY_8

Go to Question:

Prev Question

Next Question