I just want to make sure I'm doing this right...

(Numbers in brackets are the square roots or electrons)
"How many orbitals are completely filled in an atom that has 12 electrons? The electron configuration is 1s[2]2s[2]2p[6]3s[2]?"
It would be 2 right? I'm thinking it takes 1 to fill one, 2 to fill two, and 3 to fill three... Fast help insanely appreciated. :-)

1 answer

you're correct

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