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Question

After γ decay what would be the daughter element produced by technetium-99m (an isomer of 99Tc with atomic number 43 and mass number 99) ?

A
9843Tc
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B
9942Mo
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C
9944Ru
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D
9541Nb
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E
9943Tc
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Solution

The correct option is E 9943Tc
After γ decay 9943Tc would be the daughter element produced by technetium-99m (an isomer of 99Tc with atomic number 43 and mass number 99).
9943Tc9943Tc+00γ
Gamma particles have mass number 0 and atomic number 0.

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