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Structure of Atom — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistryStructure of Atom2 Marks
Question
  1. How many subshells are associated with n = 5?
  2. Write the electronic configuration of Fe2+ ions (z = 26)
✓

Answer

  1. n = 5, l = 0, 1, 2, 3, $[\because$ l = 0, 1, .... n - 1 but l = 4 is not possible 'g' orbital is not being orbital used$]$

n = 5, l = 0, 5s, n = 5, l = 1 is 5p.

n = 5, l = 2 is 5d, n = 5, l = 3 is 5f

  1. 1s2 2s2 2p6 3s2 3p6 4s0 3d6

[Electrons are removed from outer 4s orbital first and then from 3d-orbitals]

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