Question Detail

CHM 102 Radioactivity Objective Question
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Question

What is the daughter nucleus formed when 21482Pb undergoes beta (β) decay?
Options
A <sup>214</sup><sub>81</sub>Tl
B <sup>214</sup><sub>83</sub>Bi
Correct Answer
C <sup>210</sup><sub>80</sub>Hg
D <sup>214</sup><sub>82</sub>Pb (unchanged)
Correct Answer

Option B is the correct answer.

Detailed Explanation

Page 13 provides the example: '21482Pb (parent) → 21483Bi + 0-1β (daughter)'. In beta decay, a neutron converts into a proton and an electron (beta particle), increasing the atomic number by 1 while the mass number remains unchanged.

Hint

Beta decay involves the emission of an electron, which changes the atomic number but not the mass number.

Question Info

Course: CHM 102
Topic: Radioactivity
Type: Objective
Difficulty: Not specified
Question 1879 of 1999
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