An atom 238 92 X decays by alpha particle emission to give an atom Y.
CHEMISTRY
WAEC 2011
An atom23892X decays by alpha particle emission to give an atom Y. The atomic number and mass number of Y are
- A. 90 and 234 respectively
- B. 91 and 238 respectively
- C. 92 and 236 respectively
- D. 93 and 238 respectively
Correct Answer: A. 90 and 234 respectively
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