harleymanis575 harleymanis575
  • 23-10-2019
  • Chemistry
contestada

write the electron configuration for N and N-3. How many electrons are in the valence energy level?

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Karthiga
Karthiga Karthiga
  • 05-11-2019

Non-valence electrons: 1s22s22p6. Therefore, we write the electron configuration for Na: 1s22s22p63s1. What is the highest principal quantum number that you see in sodium's electron configuration? It's n = 3, so all electrons with n = 3 are valence electrons, and all electrons with n < 3 are non-valence electrons.

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