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Chemistry, 22.11.2020 05:20 loredohome

How many valence electrons in this atom: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁵ *

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How many valence electrons in this atom: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁵ *...
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