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Related Concept Videos

Isotopes and Radioisotopes01:28

Isotopes and Radioisotopes

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In the early 1900s, English chemist Frederick Soddy realized that an element could have atoms with different masses that were chemically indistinguishable. These different types are called isotopes — atoms of the same element that differ in mass. Isotopes differ in mass because they have different numbers of neutrons but are chemically identical because they have the same number of protons. Soddy was awarded the Nobel Prize in Chemistry in 1921 for this discovery.
An isotope containing...
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Radioactive Decay and Radiometric Dating02:48

Radioactive Decay and Radiometric Dating

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Radioactivity is a spontaneous disintegration of an unstable nuclide and is a random process, as all the nuclei in the sample do not decay simultaneously. The number of disintegrations per unit time is called the activity (A), which is directly proportional to the number of nuclei in the sample. The decay constant (λ) is an average probability of decay per nucleus in unit time.
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Nuclear Transmutation03:20

Nuclear Transmutation

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Nuclear transmutation is the conversion of one nuclide into another. It can occur by the radioactive decay of a nucleus, or the reaction of a nucleus with another particle. The first manmade nucleus was produced in Ernest Rutherford’s laboratory in 1919 by a transmutation reaction, the bombardment of one type of nuclei with other nuclei or with neutrons. Rutherford bombarded nitrogen-14 atoms with high-speed α particles from a natural radioactive isotope of radium and observed...
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Radioactivity and Nuclear Equations03:18

Radioactivity and Nuclear Equations

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Nuclear chemistry is the study of reactions that involve changes in nuclear structure. The nucleus of an atom is composed of protons and, except for hydrogen, neutrons. The number of protons in the nucleus is called the atomic number (Z) of the element, and the sum of the number of protons and the number of neutrons is the mass number (A). Atoms with the same atomic number but different mass numbers are isotopes of the same element.
A nuclide of an element has a specific number of protons and...
25.4K
Types of Radioactivity03:23

Types of Radioactivity

18.5K
The most common types of radioactivity are α decay, β decay, γ decay, neutron emission, and electron capture.
Alpha (α) decay is the emission of an α particle from the nucleus. For example, polonium-210 undergoes α decay:
18.5K
Biological Effects of Radiation02:59

Biological Effects of Radiation

16.7K
All radioactive nuclides emit high-energy particles or electromagnetic waves. When this radiation encounters living cells, it can cause heating, break chemical bonds, or ionize molecules. The most serious biological damage results when these radioactive emissions fragment or ionize molecules. For example, α and β particles emitted from nuclear decay reactions possess much higher energies than ordinary chemical bond energies. When these particles strike and penetrate matter, they...
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Radiosynthesis, Quality Control, and Small Animal Positron Emission Tomography Imaging of 68Ga-Labelled Nano Molecules
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Radiosynthesis, Quality Control, and Small Animal Positron Emission Tomography Imaging of 68Ga-Labelled Nano Molecules

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Radioactive Molecules 2019-2020.

Svend Borup Jensen1,2

  • 1Department of Nuclear Medicine, Aalborg University Hospital, 9000 Aalborg, Denmark.

Molecules (Basel, Switzerland)
|January 27, 2021
PubMed
Summary

This review summarizes research on radioactive molecules published in Molecules during 2019-2020. It covers key advancements and applications in radiochemistry and molecular imaging.

Area of Science:

  • Radiochemistry and Molecular Imaging

Background:

  • This review synthesizes research on radioactive molecules from the journal Molecules (2019-2020).
  • It focuses on advancements in the synthesis, characterization, and application of radiolabeled compounds.

Discussion:

  • The review highlights the growing importance of radioactive molecules in various scientific fields.
  • It discusses the challenges and opportunities in the development of novel radiotracers.

Key Insights:

  • Key insights include the expanding utility of radioactive molecules in diagnostic and therapeutic applications.
  • Emerging trends in radiopharmaceutical development are identified.

Outlook:

  • Future research directions emphasize the need for more efficient radiolabeling techniques.

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  • The potential for new applications in personalized medicine and drug discovery is explored.