chemistry

Write both the complete electron-configuration notation and the noble-gas notation for each of the elements below
a. Na
b. Sr
c. P

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  1. You should know how to do this. If you have trouble. here is a site that may help. If you don't understand, post again but tell us what you don't understand.
    www.webelements.com

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  2. Na: 1s^2, 2s^2, 2p^6, 3s^1 or,
    Na: [Ne] 3s^1

    Sr: 1s^2, 2s^2, 2p^6, 3s^2, 3p^6, 4s^2, 3d^10, 4p^6, 5s^2 or,
    Sr: [Kr] 5s^2

    P: 1s^2, 2s^2, 2p^6, 3s^2, 3p^3 or,
    P: [Ne] 3s^2, 3p^3

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  3. thanks GK

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  4. 1s22s22p1

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  5. Na: 1s^2, 2s^2, 2p^6, 3s^1 or,
    Na: [Ne] 3s^1

    Sr: 1s^2, 2s^2, 2p^6, 3s^2, 3p^6, 4s^2, 3d^10, 4p^6, 5s^2 or,
    Sr: [Kr] 5s^2

    P: 1s^2, 2s^2, 2p^6, 3s^2, 3p^3 or,
    P: [Ne] 3s^2, 3p^3

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