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Chemistry, 11.01.2021 21:20 EinsteinBro

What is the identity of the element with the electron configuration of 1s2 2s2 2p6
3s2 3p6 4s2?

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What is the identity of the element with the electron configuration of 1s2 2s2 2p6
3s2 3p6 4s2...

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