Question Detail

PHY 104 Atomic Structures Objective Question
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Question

Which statement accurately describes the changes in Z and A during beta-plus (β+) decay?
Options
A Z increases by 1, A remains the same.
B Z decreases by 1, A remains the same.
Correct Answer
C Z decreases by 2, A decreases by 4.
D Z increases by 1, A increases by 1.
Correct Answer

Option B is the correct answer.

Detailed Explanation

The section 'Beta plus Decay' describes a proton converting to a neutron and emitting a positron. This means the atomic number (Z) decreases by 1, while the mass number (A) remains unchanged because a proton is replaced by a neutron.

Hint

A positron is emitted, which has a positive charge, implying a proton has changed into a neutron.

Question Info

Course: PHY 104
Topic: Atomic Structures
Type: Objective
Difficulty: Not specified
Question 159 of 947
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