An element X belongs to fourth period an...

An element `X` belongs to fourth period and fifteenth group of the periodic table.Which one of the following is true regarding the outer electronic configuration of'X'?

A

Partially filled d-orbitals and completely filled s- orbitals

B

completely filed s-orbitals and completely filled p-orbitals

C

completely filled s-orbitals and half filled p-orbitals

D

half field d-orbitals and completely filed s-orbitals

Verified by Experts

The correct Answer is:

D

The element is As and its electronic configurattion is
`1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)3d^(10)4s^(2)4p_(x)^(1)4p_(y)^(1)4p_(z)^(1)`

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