Question

Three elements X, Y and Z form a Dobereiner triad. Their atomic weights of X, Y, Z are in the ratio 5:11:17. If the sum of the atomic weight of extreme elements is 176,
find the atomic weights of X, Y and Z.​

Answer 1

Explanation:

Let the given ratio of atomic weights of X, Y, Z be 5x, 11 x, 17x respectively. Sum of extreme elements(5x+17x)=176(given). 22x=176,x=17622=8 ∴ At wt. of X=5×8=40,Y=11×8=88, Z=17×8=136.

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Answer 2

Answer:

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