Activity 2.1 Let's Practice 1. Fill-in the electron orbitals corresponding to Silicon (1451), then write out the complete electron configuration 4p DO 4s 3p 그 3s 2p 2s 1s Silicon (14Si):

Answer:
1. : 1s^2 2s^2 2p^6 3s^2 3p^2
2 Nitrogen excited state