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Ne 3s2 would be Magnesium, and Ar 3d6 4s2 is Iron.

For the first one you look at neon and count 2 "s" electrons after, which puts you at Mg.

For the latter, you look at Argon, count 2 "4s" electrons then 6 "3d" electrons. and you'll end up on Fe.

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Q: What is Ne 3s2 and Ne 3s2 and Ar 3d6 4s2 noble gas notation for?
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