Question Detail

PHY 104 PHY 104 Past Questions Objective Question

Question

The stable isotope of sodium is ²³Na. What kind of radioactivity would you expect of ²⁴Na?
Options
A α⁺
B β⁻
Correct Answer
C β⁺
D α⁺
Correct Answer

Option B is the correct answer.

Detailed Explanation

²⁴Na has more neutrons than the stable isotope ²³Na. It will undergo β⁻ decay to convert a neutron into a proton, moving towards the line of stability.

Hint

Isotopes with excess neutrons tend to undergo beta-minus decay.

Question Info