In which period is an element that has the electron configuration 152 252 2p6 352 3p6 3d10 452 4p1 ? * Period 4 Period

Question

In which period is an element that has the electron configuration 152 252
2p6 352 3p6 3d10 452 4p1 ? *

Period 4
Period 1
Period 2
Period 3​

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King 5 years 2021-08-26T13:04:49+00:00 1 Answers 7 views 0

Answers ( )

  1. Thunguyet
    0
    2021-08-26T13:06:11+00:00
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    Answer:

    Period 4

    Explanation:

    Given the electronic configuration of the element;

    = Is²  2s²  2p⁶  3s²  3p⁶  3d¹⁰   4s²    4p¹

    The period of the element is determined by the highest coefficient in the electronic configuration.

    For this given configuration (Is²  2s²  2p⁶  3s²  3p⁶  3d¹⁰   4s²    4p¹), “4” is the highest coefficient and the element will certainly belong to period 4 in the periodic table.

    To test if the prediction is correct:

    Total number of electrons in the given element = 2+2+6+2+6+10+2+1 = 31

    The element with atomic number of 31 = Gallium (Ga). (This element belong to period 4).

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