Question Detail

CHM 102 Radioactivity Objective Question

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During an alpha (α) decay, how are the atomic mass and atomic number of the parent nucleus affected?

A Atomic mass increases by 4, atomic number increases by 2.

B Atomic mass remains unchanged, atomic number increases by 1.

C Atomic mass is reduced by 4, atomic number is reduced by 2.

Correct Answer

D Atomic mass is reduced by 2, atomic number is reduced by 1.

Option C is the correct answer.

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.'

Check the final bullet point on page 12 describing the changes in alpha decay.

Course: CHM 102

Topic: Radioactivity

Type: Objective

Difficulty: Not specified

Question 1835 of 1999

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