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08-07-2020
Biology

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What is the electron configuration of an element with atomic number 20? A. 1s2 2s2 2p6 3s2 3p5 B. 1s2 2s2 2p6 3s2 3p6 C. 1s2 2s2 2p6 3s2 D. 1s2 2s2 2p6 3s2 3p6 4s2 E. 1s2 2s2 2p6

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mosfara5478 mosfara5478

08-07-2020

Answer:

electron configuration is 2,8,8,2

Explanation:

1s2 2s2 2p6 3s2 3p6 4s2

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