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how does the electron enter in the 6th period??why does it first enter in 5d then in 4s????

Asked by karan bhatt 26th September 2013, 10:10 PM
Answered by Expert
Answer:
Remeber two rules while filling electrons in the atoms:
  1. Orbitals are filled in the order of increasing n+l;
  2. Where two orbitals have the same value of n+l, they are filled in order of increasing n.
Where n = primary quantum number and l= azimuthal quantum number.
 
So, electron will enter in 6s and then in 5d.
Answered by Expert 27th September 2013, 10:42 AM
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