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In a fcc arrangement of X and Y atoms, whose Y atoms are at the corners of the unit cell and X atoms are at the face centres. One of the X atoms is missing frm one of the faces in the unit cell. The simplest formula of the compound is :- (a) X 5 Y 2 (b)X 2 Y 5 (c) XY 3 (d) X 3 Y

In a fcc arrangement of X and Y atoms, whose Y atoms are at the corners of the unit cell and X atoms are at the face centres. One of the X atoms is missing frm one of the faces in the unit cell. The simplest formula of the compound is :-


(a) X 5 Y2   (b)X2Y5   (c) XY3      (d) X3 Y

Grade:12

2 Answers

Sudip Ghosh
18 Points
12 years ago

 I think it is X2Y5

abhishek sahu,IIT-K
33 Points
12 years ago

initially total number of  X atoms =4

finally it will be3

answer is-- X3 Y

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