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13 October, 01:40

Arsenic does not have any valence electrons in the 3d orbital because

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  1. 13 October, 01:49
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    Atomic number of Arsenic is 33. And the electronic configuration of Arsenic is [Ar] 3d10 4s2 4p 3.

    Now, valence electrons are the electrons present in outermost shell. With reference to Arsenic, valence shell is n = 4. And in 4th shell, there are no electrons present in d-orbital.

    On other hand, 3rd shell is not the valence shell in case of Arsenic. Hence, electrons present of 3d shell of Arsenic cannot be referred as valence electrons.
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