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12 December, 15:19

To what element does Thorium-230 (atomic number-90) decay when it emits an alpha particle (42He) ?

a. 22688Ra

c. 22886Rn

b. 23090Ra

d. 22286Rn

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  1. 12 December, 18:41
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    Thorium - 230 will convert into 226-Ra-88 by Alpha particle decay as Alpha particle decay means the loss of 2 neutrons and 2 protons.
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