Introduction to Isotopes, Radioactivity, and Radioactive decay

0.0(0)
studied byStudied by 0 people
0.0(0)
full-widthCall with Kai
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
GameKnowt Play
Card Sorting

1/13

encourage image

There's no tags or description

Looks like no tags are added yet.

Study Analytics
Name
Mastery
Learn
Test
Matching
Spaced
Call with Kai

No study sessions yet.

14 Terms

1
New cards

Isotopes

Atoms of the same element with the same number of protons (atomic number) but different number of neutrons (different atomic mass)

2
New cards

What is the kinetic isotope effect?

The change in the rate of a chemical reaction when an atom in the reactants is replaced by one of its isotopes.

3
New cards

What are the uses of the kinetic isotope effect?

  • Determining which bonds are broken in the RDS

  • Studying enzyme catalysed reactions

  • Investigating reaction transition states and bond strength differences

4
New cards

Name the three types of radiation

Alpha, beta, gamma

5
New cards

The decay of unstable atomic nuclei:

knowt flashcard image
6
New cards

What is the exponential decay law?


knowt flashcard image
7
New cards

What is the Activity-time relationship?

knowt flashcard image
8
New cards

What is the link between activity and number of nuclei?

knowt flashcard image
9
New cards

What’s the half life equation for nuclei?


knowt flashcard image
10
New cards

1 bq =

1 bq = 1 disintegration per second

11
New cards

1 Ci =


1 Ci = 3.7 × 1010 Bq

12
New cards
<p><span><sup>18</sup>F decays to <sup>18</sup>O, with a half life of 109.7 minutes. What is the decay constant for <sup>18</sup>F?</span></p>

18F decays to 18O, with a half life of 109.7 minutes. What is the decay constant for 18F?

Remember to convert units if it has to be in seconds or something.

<p><span><span>Remember to convert units if it has to be in seconds or something.</span></span></p>
13
New cards

What’s the relationship between the decay constant and the half life?

  • The decay constant (λ) and the half-life (t₁/₂) are inversely related.

  • When one increases, the other decreases.

<ul><li><p>The decay constant (λ) and the half-life (t₁/₂) are <strong>inversely related</strong>.</p></li><li><p>When one increases, the other decreases.</p></li></ul><p></p>
14
New cards

What is radiolabelling?

A technique in which a radioactive isotope is incorporated into a molecule so that the molecule can be tracked or detected by measuring the radiation it emits.