Given the electron configuration of an atom 1s2 2s2 2p6 3s2 3p6 4s1, which is its valence shell?

Given the electron configuration of an atom 1s2 2s2 2p6 3s2 3p6 4s1 ,which is its valence shell?


Answer:

Given, the electron configuration of an atom is 1s2 2s2 2p6 3s2 3p6 4s1.

To find valence shell,you need to find the highest value of principal quantum number.Here the highest value of principal quantum number n is 4.That is why the valence shell from electron configuration   1s2 2s2 2p6 3s2 3p6 4s1 is the fourth shell (4s1).


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  1. Valence ElectronsAugust 4, 2021 at 11:35 AM

    very informative article, this article very helpful for me. I found this information on the Valence Electrons site a few days ago.

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