which is the electron configuration for lithium?\no 1s²\no 2s³\no 1s²2s¹\no 1s¹2s²
which is the electron configuration for lithium?\no 1s²\no 2s³\no 1s²2s¹\no 1s¹2s²
Answer
Brief Explanations:
Lithium has an atomic number of 3, meaning it has 3 electrons. The first energy - level (1s) can hold 2 electrons, and the remaining 1 electron goes into the 2s orbital. So the electron configuration is $1s^{2}2s^{1}$.
Answer:
$1s^{2}2s^{1}$