Question

Check that Alpha Decay and Uranium are selected. Turn on Write Equation and Show Equation. What you see is an equation that shows the original uranium atom on the left. The boxes on the right represent the daughter product- the atom produced by radioactive decay- and the emitted alpha particle.

A. The upper left number next to the daughter product is the mass number of the daughter product. What is the mass number of the daughter product ?

B. The lower left number next to the daughter product is the atomic number of the daughter product. What is the atomic number of the daughter product ?

C. According to your equation, what isotope remains after the alpha decay of uranium-238?(Hint: look up the element symbol on the periodic table and name the element then dash and then mass number from A- ex: uranium-238)

D. How does the mass number of the daughter product after alpha decay relate to the original atom?

E. How does the atomic number of the daughter product after alpha decay relate to the original atom?

Answer 1

(A) The mass number of the daughter product is 234.

(B) The atomic number of daughter product is 90.

(C) The isotope that remains after the alpha decay is thorium-234.

(D) The mass number of the daughter product is 4 less than the original atom.

(E) The atomic number of the daughter product is 2 less than the original atom.

Alpha decay of Uranium

The alpha decay of Uranium involves the emission of alhpa particles and thorium-234 as daughter product.

$^{238}_{92}U\ ---- > \ \ ^4_2He \ + \ ^{234}_{90}Th$

From the equation of alpha decay of Uranium, we can infer the following;

• The mass number of the daughter product is 234.
• The atomic number of daughter product is 90.
• The isotope that remains after the alpha decay is thorium-234.
• The mass number of the daughter product is 4 less than the original atom.
• The atomic number of the daughter product is 2 less than the original atom.

Learn more about alpha decay here: https://brainly.com/question/17145324

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