In the uranium disintegration series: A) the emission of a $\beta$^- particle increases the mass number A by one and decreases the atomic number Z by one B) the disintegrating element merely ejects atomic electrons C) the emission of an $\alpha$particle decreases the mass number A by four and decreases the atomic number Z by two D) the nucleus always remains unaffected E) the series of disintegrations continues until an element having eight outermost orbital electrons is obtained

Question

Quizplus · Accepted Answer

The emission of an α particle (consisting of two protons and two neutrons) decreases the mass number A by four and decreases the atomic number Z by two in the uranium disintegration series. This is a well-known fact in nuclear physics. Option A is incorrect because the emission of a β particle increases the atomic number Z by one and does not affect the mass number A. Option B is incorrect because the disintegration process involves the emission of various particles, including α and β particles, which are not atomic electrons. Option D is incorrect because the nucleus undergoes changes during the disintegration process. Option E is unrelated to the disintegration series and is incorrect.

In the Uranium Disintegration Series: A) the Emission of A \beta

In the Uranium Disintegration Series:
A) the Emission of A \beta