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23 March, 10:49

Calcium (Ca) has an atomic number of 20. What is calcium's ground-state electron configuration? 1s21p61d101f2 1s21p62s22p63s23p2 1s22s22p63s23p64s2 1s22s22p63s23p63d2

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  1. 23 March, 11:54
    0
    Electron configuration:

    The arrangement of electrons in an atom by a superscript, in each sublevel is known as electron configuration.

    The electronic configuration of Ca is as follows:

    Ca: 20

    1s22s22p63s23p64s2.
  2. 23 March, 13:12
    0
    The answer is C) 1s22s22p63s23p64s2
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