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An element A belongs to fourth period and fifteenth group of the periodic table. Which one of the following regarding the outer electronic configuration of A is correct ?

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Partially filled d – orbitals and completely filled s – orbital

Completely filled s – orbital and half filled p – orbitals

Completely filled s – orbital and half filled d – orbitals

Completely filled s and p – orbitals

answer is B.

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Detailed Solution

The outer electronic configuration of an element belongs to 4th period and 15th group is $4 s^{2} 4 p^{3}$ . Element is Arsenic

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