Select the element(s) that will have ONE unpaired electron in the p orbital. Ca N B Ar

Question

Select the element(s) that will have ONE unpaired electron in the p orbital.

Ca

N

B

Ar

Br

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Lệ Thu 3 years 2021-08-08T14:41:42+00:00 1 Answers 3 views 0

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  1. Sigrid
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    2021-08-08T14:43:05+00:00
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    Answer: The element B will have ONE unpaired electron in the p orbital.

    Explanation:

    The electronic configuration of each given element is as follows.

    Atomic number of calcium (Ca) is 20.

    Ca: 1s^{2} 2s^{2} 2p^{6} 3s^{2} 3p^{6} 4s^{2}

    Atomic number of nitrogen (N) is 7.

    N: 1s^{2} 2s^{2} 2p^{3}

    Atomic number of boron (B) is 5.

    B: 1s^{2} 2s^{2} 2p^{1}

    Atomic number of argon (Ar) is 18.

    Ar: 1s^{2} 2s^{2} 2p^{6} 3s^{2} 3p^{6}

    Atomic number of bromine (Br) is 35.

    Br: [Ar] 4s^{2} 3d^{10} 4p^{5}

    Therefore, boron is the only element that have one unpaired electron in the p-orbital.

    Thus, we can conclude that element B will have ONE unpaired electron in the p orbital.

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