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Katena32 [7]
3 years ago
8

What electron subshell is being filled for the rare earth series of elements on the periodic table? What electron subshell is be

ing filled for the actinide series?
Chemistry
1 answer:
iris [78.8K]3 years ago
8 0

Answer:

  • Scandium: 3d
  • Yttrium: 4d
  • Lanthanum: 5d
  • Rest of rare earth elements: 4f (<em>they are part of the f-block</em>)
  • Actinide series: 5f

Explanation:

The electron subshell being filled is defined by the differential electron, which is the last electron placed in the electron configuration.

The rare earth series involves 17 elements: scandium, yttrium and 15  lanthanides. The subshell filled for these elements are:

  • Scandium: 3d
  • Yttrium: 4d
  • Lanthanum: 5d
  • Rest of rare earth elements: 4f (<em>they are part of the f-block</em>)

The actinide series includes 15 elements. The electron subshell filled for these elements is 5f (<em>they are part of the f-block</em>).

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