which is the electron configuration for lithium? 1s² 2s³ 1s²2s¹ 1s¹2s²
which is the electron configuration for lithium? 1s² 2s³ 1s²2s¹ 1s¹2s²
Answer
Answer:
1s²2s¹
Brief Explanations:
Lithium has 3 electrons. Electrons fill lower - energy 1s orbital first (2 electrons) and then the 2s orbital (1 electron).