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21-04-2021
Physics

contestada

238 U
92 ———————>
The alpha decay of ___ produces an atom with a mass number of...
OA. 234
B. 236
C. 238
D. 240

238 U 92 gt The alpha decay of produces an atom with a mass number of OA 234 B 236 C 238 D 240 class=

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26-04-2021

Answer:

A. 234

Explanation:

An alpha particle is a Helium atom which has a mass number of 4 and atomic number of 2. So, an alpha particle decay cause the mass number to decrease by 4 units.

So 238 - 4 = 234

The answer is A

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