What is the element with the electron configuration $1s^2 2s^2 2p^6 3s^2 3p^6 4s^1$ ?

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What is the element with the electron configuration $1s^2 2s^2 2p^6 3s^2 3p^6 4s^1$ ?

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Answer 1 · 2016-12-19T07:00:51

Well, there are 19 electrons so...........

Explanation:

So if the the element is neutral (and we must presume it to be!) there are 19 protons in the element's nucleus. And if there are 19 nuclear protons, $Z=19$ , the element must be ..........?

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What is the element with the electron configuration $1s^2 2s^2 2p^6 3s^2 3p^6 4s^1$ ?

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What is the element with the electron configuration 1s^2 2s^2 2p^6 3s^2 3p^6 4s^11s^2 2s^2 2p^6 3s^2 3p^6 4s^1?

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What is the element with the electron configuration $1s^2 2s^2 2p^6 3s^2 3p^6 4s^1$ ?