what is the final/last term of electron configuration for silicon?
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last term of electron configuration for silicon?
what is the final/last term of electron configuration for silicon?
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When adding electrons, the lowest energy levels are always filled first.
The lowest energy level is the 1s. All orbitals hold two electrons, and there is one possible orbital for s electrons to have, so we add two electrons to 1s. The same is true for the next highest level, 2s. 2p is different because there are three different orbitals which can hold 6 electrons in total. The same filling continues, and you add two electrons to the 3s. At this point, we have used twelve electrons and two electrons remain since silicon has 14 electrons. We add the final two electrons to the 3p. So the final configurations is:
1s^2 2s^2 2p^6 3s^2 3p^2