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

Aits 3d orbital is completely filled.

Bit only contains enough electrons to fill the 2s orbital.

Cit is an inert substance that is not reactive.

Dall of its valence electrons are in the 3p orbital.

Verified Answer :

PBCHEM

Answer : Option A) its 3d orbital is completely filled.

Explanation : Arsenic does not have any valence electrons in the 3d orbital because it's 3d orbital is completely filled.

Arsenic has atomic number as 33 and the electron configuration is \([Ar] 3d^{10} 4s^{2} 4p^{3}\). It clearly shows that the 3d orbital is completely filled which does not has space to accommodate any electrons in the 3d orbital. Therefore, the electrons are accommodated in 4s and 4p orbitals,

Answer:

(a)its 3d orbital is completely filled.

Explanation:

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