Question

atomic numbers and electron configurations
quiz complete
1 2 3 4 5 6 7 8 9 10
which is the electron configuration for boron?
○ $1s^22s^3$
○ $1s^22s^23s^1$
○ $1s^12s^22p^2$
○ $1s^22s^22p^1$

Explanation:

remaining 1 electron in $2p$: $2p^1$.

Step3: Combine orbitals

Total configuration: $1s^22s^22p^1$

Answer:

remaining 1 electron in $2p$: $2p^1$.

Step3: Combine orbitals

Total configuration: $1s^22s^22p^1$