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12-06-2017
Chemistry

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Sodium has the atomic number 11. How many electrons are in a sodium ion, which has the symbol Na+? 10 11 12 NextReset © 2017 Edmentum. All rights reserved. Reader ToolsInfoGrade Assessment

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12-06-2017

Na 1s²2s²2p⁶3s¹
↓ - e⁻
Na⁺ 1s²2s²2p⁶ 2+2+6=10 e⁻

10 electrons are in sodium ion Na⁺

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