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Chemistry 19 Online
OpenStudy (18jonea):

How many electrons are in the highest occupied energy level of a neutral silicon atom? 8 14 4 12

OpenStudy (18jonea):

@Cuanchi

OpenStudy (18jonea):

@vera_ewing

OpenStudy (aaronq):

can you write the electronic configuration for Si?

OpenStudy (18jonea):

no i really dont know @aaronq

OpenStudy (aaronq):

it's an essential skill if you're doing chemistry and it will come in handy. watch this video https://www.youtube.com/watch?v=2AFPfg0Como

OpenStudy (18jonea):

still have no idea

OpenStudy (18jonea):

@Cuanchi

OpenStudy (18jonea):

@aaronq I know there is 14 electrons in silicon

OpenStudy (18jonea):

1s2 2s2 2p6 3s2 2p2

OpenStudy (18jonea):

is it 4

OpenStudy (aaronq):

awesome. nope, the last energy level would be 3 the number preceeding the letter (orbital) is the energy level, the higher the number, the higher the energy an electron is

OpenStudy (aaronq):

oh wait, no the configuration you wrote is incomplete. \(\sf \huge 1s^2 2s^22p^63s^23p^2\) so yeah, 4 electrons

OpenStudy (18jonea):

so the answer is 4

OpenStudy (aaronq):

yeah

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