Each of the following atomic orbitals is possible except:

  1. A

    1s

  2. B

    2p

  3. C

    3f

  4. D

    4d

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    Solution:

    Atomic orbitals are possible, except is 3f.

    Since the first shell may only contain a maximum of two electrons, only the 1s orbital exists in this shell. This means that there is no 1p orbital. With a maximum of 8 electrons, the second shell can contain both 2s and 2 orbitals. Because of this, there are no 3f orbitals.

    Hence, option C is correct.

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