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Science → Physical sciences → Chemistry → Chemical elements
ANSWERS: 1
  • daniel
    the configuration of this iron atom is 2,8,14,2 from this we can see it takes four shells. also. a formula for energy levels = 2n^2 where n = energy level. 26 = 2n^2, solve for n 13 = n^2, root(13) = n n = approx 3.6 meaning it takes 3 full shells and a bit of another. therefore 4 shells
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