3rd electron level holds 8 or 18 electrons?
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WHy do some elements hold 8 electrons in the 3rd energy level and the rest goes to 4th when the maximum limit is 18? Thanks
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Answer:
electrons first occupy the lowest-energy orbital available to them and enter into higher energy energy orbitals only after the lower energy orbital are filled.the order in which the energy of the orbitals increase and filled are; 1s,2s,2p,3s,3p,4s,3d,4p,5s,4d,5p,6s,4f,5... therefore in the third electron level the 3s and 3p gets filled first and then it goes to 4s.
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