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18 Dec 2019
The element that corresponds to the electron configuration1s22s1 is __________.
nitrogen lithium boron carbon beryllium
The element that corresponds to the electron configuration1s22s1 is __________.
nitrogen | |
lithium | |
boron | |
carbon | |
beryllium |
sabujLv3
23 Aug 2022
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Hubert KochLv2
31 Dec 2019
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