Problem 19.103 Fraud in science is rare but does happen occasionally. In 1999, t

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Problem 19.103

Fraud in science is rare but does happen occasionally. In 1999, the creation of three superheavy elements (one new) was claimed when 208Pb was bombarded with 86Kr. The claim was subsequently found to be fraudulent and was withdrawn. Identify the isotopes X, Y, and Z that were claimed.
20882Pb+8636KrnXYZ

Part A

Identify the isotope X.

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Part B

Identify the isotope Y.

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Part C

Identify the isotope Z.

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Problem 19.103

Fraud in science is rare but does happen occasionally. In 1999, the creation of three superheavy elements (one new) was claimed when 208Pb was bombarded with 86Kr. The claim was subsequently found to be fraudulent and was withdrawn. Identify the isotopes X, Y, and Z that were claimed.
20882Pb+8636KrnXYZ

Part A

Identify the isotope X.

Identify the isotope X. 217111X 28058X 293118X 296108X

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Part B

Identify the isotope Y.

Identify the isotope Y. 289116Y 18880Y 26946Y 275136Y

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Part C

Identify the isotope Z.

Identify the isotope Z. 24830Z 24896Z 285114Z 258125Z

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Explanation / Answer

82Pb208 + 36Kr86 ------------------> 118X293 + 0n1

X   = 118X293

118X293 --------------->       116Y289     + 2He4

    Y = 116Y289

116Y289 --------------->     114Z285 + 2He4

Z   =    114Z285

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