Question

Two elements X and Y ( atomic no. x=75 y =16) combine to give a compound having 76% of X. then formula of compound is?

Answer 1

Element          percentage            mass ratio           atomic ratio  
X                       76                          76/75 = 1.01          1.01/1.01 = 1x 2 = 2
Y                       24                          24/16 = 1.5       1.5/1.01 = 1.48≈1.5 x 2 = 3 

So empirical formula of compound = X₂Y₃
For molecular formula you have to provide molecular mass of the compound.
Hope this helps.

Answer 2

Answer:

Hey!!

Here is the answer---->

Hope it helps.