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Q. A compound contains atoms X, Y and Z. The oxidation number of X is +3, Y is +5 and Z is -2. The possible formula of the compound is

Redox Reactions

Solution:

Let formula is $X_x\, Y_y\, Z_z$. O.N. of X, Y and Z are +3, +5 and -2 respectively. 3x + 5y - 2 z = 0. The values of x, y, and z satisfying this equation are 3, 3 and 12. Therefore correct formula is $X_3(YZ_4)_3$.