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

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Alexey Primechaev asked Apr 24, 2022

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38 votes

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

Chemistry
high-school

Alexey Primechaev asked Apr 24, 2022

by Alexey Primechaev

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14 votes

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.

Ridalgo answered Apr 26, 2022

by Ridalgo

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27 votes

Answer:

the answer is C

Step-by-step explanation:

Pa answered Apr 28, 2022

by Pa

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