Question

atomic weight of an element is X 39 and their and element Z is 132 atomic weight of the year intermediate element Y is will be ​

Answer 1

X= 29 (copper)

Z=132(Samarium)

Answer 2

Answer:

Atomic weight (y) = 85.5 u

Explanation:

Given;-

    Atomic weight of x = 39 u

    Atomic weight of z = 132 u

From Dobereiner's triad law, we know that the average atomic mass of 1st and 3rd element is equal to the atomic mass of the intermediate element. So,

    Atomic weight, y = x + z/2

                              y = 132 + 39/ 2

                              y = 85.5 u

Hope it helps! ;-))