Q.
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?
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a
It has partially filled d-orbitals and completely filled s-orbitals
b
It has completely filled s-orbitals and completely filled p-orbitals
c
It has completely filled s-orbitals and half filled p-orbitals
d
It has half filled d-orbitals and completely filled s-orbitals
answer is C.
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Detailed Solution
The electronic configuration of X can be written as X=1s22s22p63s23p64s23d104p3So element X has completely filled s and d orbitals and half filled p-orbitals.
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