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Determine the elements with these electron configurations 1s 2s 2p5 = 1s 2s 2p 3s 3p5 = 1s 2s 2p 3s 3p 482 3d? =
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Determine the elements with these electron configurations

1s 2s 2p5 =
1s 2s 2p 3s 3p5 =
1s 2s 2p 3s 3p 482 3d? =

User James Addison
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Use a periodic table. Count the exponent for your atomic number. So, 1s2 2s2 2p5= Fluorine
1s2 2s2 2p6 3s2 3p5= Chlorine
1s2 2s2 2p6 3s2 3p6 4s2 3d6= Iron
User Bjarni Ragnarsson
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