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10-06-2017
Chemistry

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An element that contains an electron in a d sublevel is A. Mg. B. O. C. Fe. D. Ne.

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LeChatNoir LeChatNoir

10-06-2017

C) Fe

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁶

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31-10-2018

Fe iron atomic number 26 i took the test

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