Which is the electron configuration for lithium? 1s2 2s3 1s22s1 1s12s2

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Lionel Hamayon · Answer 1 · 2022-05-26T19:00:55+0000

Answer:

1s2, 2s1

Step-by-step explanation:

Lithium is the first element in the 2nd row of elements meaning its 1s orbital is completely filled and 1 electron is in the 2s orbital.