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Isotopes and atomic representations explained

Atomic structure • Atoms and isotopes

Key concepts

What you'll likely be quizzed about

  • Isotopes are versions of a chemical element that have identical atomic numbers but different mass numbers.
  • The atomic number represents the count of protons, while the mass number is the sum of protons and neutrons.
  • For example, carbon-12 and carbon-14 are isotopes of carbon.
  • They contain 6 protons but differ in their neutron count, leading to a mass number of 12 and 14, respectively.

Flashcards

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What is a common application of radioactive isotopes?

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Radioactive isotopes are used in medical imaging and treatments, such as iodine-131 for thyroid conditions.

Key notes

Important points to keep in mind

Isotopes share the same chemical properties due to identical proton count.

Radioactive isotopes emit radiation, impacting their surroundings.

The concept of isotopes extends to all elements in the periodic table.

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