Radioactive Decay and Half-life Modeling

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What is the primary reason why a nucleus might become unstable?

Having too many neutrons

In beta-minus emission, what changes in the nucleus?

A neutron changes into a proton

Which force causes protons to experience repulsion in the nucleus?

Electromagnetic force

What is the common product of beta-plus decay and electron capture?

<p>Neutron</p> Signup and view all the answers

How does the nucleon number change during beta-minus emission?

<p>Remains constant</p> Signup and view all the answers

Why must nuclei with long half-lives be suitably stored?

<p>To prevent damage to the environment</p> Signup and view all the answers

What factor allows the decay constant to be used to model the decay of a large sample of nuclei?

<p>The number of nuclei in the sample</p> Signup and view all the answers

How does the half-life of a radioactive nucleus impact its use in dating organic objects?

<p>It establishes a correlation between current and initial amounts of the nucleus</p> Signup and view all the answers

Which feature makes Technetium-99m ideal for medical diagnosis as a radioactive tracer?

<p>Its gamma emission and short half-life</p> Signup and view all the answers

In radioactive dating, why is it important to compare the current amount of a radioactive isotope with its initial amount?

<p>To estimate the age of the object being dated</p> Signup and view all the answers

Which parameter has a direct relationship with the activity of a radioactive sample?

<p>Decay constant</p> Signup and view all the answers

How does the decay constant contribute to modeling the decay process in a large sample of nuclei?

<p>By providing a measure of how fast nuclei decay statistically</p> Signup and view all the answers

What happens to the nucleon number during alpha decay?

<p>It decreases by 4</p> Signup and view all the answers

Which force becomes larger beyond a certain number of protons and neutrons in a stable nucleus?

<p>Electromagnetic force</p> Signup and view all the answers

What type of decay usually occurs when a nucleus has too many nucleons?

<p>Alpha decay</p> Signup and view all the answers

Why does a nucleus decay through gamma emission after another type of decay?

<p>To release excess energy</p> Signup and view all the answers

How does the proton number change during beta decay?

<p>It increases by 1</p> Signup and view all the answers

What is the primary reason for more neutrons needed to keep the nucleus stable after a certain point?

<p>To decrease the electromagnetic force</p> Signup and view all the answers

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