Question Detail

CHM 102 Radioactivity Objective Question
Take CBT

Question

In an alpha (α) decay, how do the atomic mass and atomic number of the parent nucleus change in the daughter nucleus?
Options
A Atomic mass increases by 4, atomic number increases by 2.
B Atomic mass decreases by 4, atomic number decreases by 2.
Correct Answer
C Atomic mass remains unchanged, atomic number decreases by 2.
D Atomic mass decreases by 2, atomic number decreases by 4.
Correct Answer

Option B is the correct answer.

Detailed Explanation

Page 12 states: 'In α decay, the atomic mass and atomic number of the parent nucleus are reduced by 4 and 2 respectively in the daughter nucleus.'

Hint

Refer to the last bullet point on page 12 detailing the effects of alpha decay.

Question Info

Course: CHM 102
Topic: Radioactivity
Type: Objective
Difficulty: Not specified
Question 1865 of 1999
Previous Course Details Next