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.(72)^(108)X overset(2 alpha)rarr overse...

`._(72)^(108)X overset(2 alpha)rarr overset(beta)rarr overset(gamma)rarr ._(Z)^(A)X'`. Z and A are

A

691,72

B

172,69

C

180,70

D

182,68

Text Solution

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The correct Answer is:
A
`._(72)^(180)X overset(2 alpha)rarr ._(68)^(172)P overset(beta)rarr ._(69)^(172)Q overset(gamma)rarr ._(69)^(172)X`
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