Chemistry, 02.07.2019 00:40 kfhayworth4480
What is the electron configuration of an element with atomic number 20? 1s2 2s2 2p6 3s2 3p5 1s2 2s2 2p6 3s2 3p6 1s2 2s2 2p6 3s2 1s2 2s2 2p6 3s2 3p6 4s2 1s2 2s2 2p6 nextreset
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What is the electron configuration of an element with atomic number 20? 1s2 2s2 2p6 3s2 3p5 1s2 2s2...
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