If a nucleus emits an alpha particle,_____.
A) its atomic number decreases by four and its mass number decreases by two
B) its atomic number decreases by two and its mass number decreases by four
C) its atomic number increases by two and its mass number decreases by two
D) its atomic number is unchanged and its mass number is unchanged
E) its atomic number is unchanged and its mass number decreases by four
Correct Answer:
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Q3: When the radioactive nucleus Q4: Which of the following reactions is an Q5: How many alpha decays are required to Q6: When the radioactive nuclide Q7: Which of the following types of radiation Q9: If a nucleus undergoes alpha particle emission: Q11: If a nucleus decays by one α Q12: Which particle does the nuclide symbol Q13: In one type of decay process,a neutron Q18: When a nucleus undergoes radioactive decay,its new
A)
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