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Question

What is atomicity?


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Solution

Understanding the concept:

  • The number of atoms that make up a molecule of an element is expressed as its atomicity.
  • For instance, the ozone molecule (O3) has an atomicity of three since it contains three oxygen atoms.

Classification of atomicity on the basis of the number of atoms in a molecule:

  • Monoatomic molecules with only one atom, such as xenon (Xe).
  • Diatomic Two atoms make up a diatomic molecule, such as oxygen (O2).
  • Triatomic molecules have three atoms, such as ozone (O3).
  • Tetratomic molecules have four atoms, such as phosphorus (P4).
  • A polyatomic molecule is one with more than four atoms, such as sulfur (S8).

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