Question Detail

PHY 104 PHY 104 Past Questions Objective Question
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Question

This reaction ⁴¹₂₀Ca → ⁴¹₁₉K + ______ is an example of
Options
A alpha decay
B beta decay
C positron decay
Correct Answer
D gamma emission
Correct Answer

Option C is the correct answer.

Detailed Explanation

The mass number is the same (41) and the atomic number decreases by 1 (20 → 19). This indicates positron emission (β⁺ decay) or electron capture. The missing particle is a positron (⁰₊₁e).

Hint

Balance the atomic and mass numbers. A decrease in Z by 1 with no change in A indicates positron emission.

Question Info

Course: PHY 104
Topic: PHY 104 Past Questions
Type: Objective
Difficulty: Not specified
Question 878 of 947
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