Question

p3-
express your answer in complete form, in order of increasing orbital. for example, 1s²2s² would be entered as 1s^22s^2.
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Explanation:

Step1: Determine the atomic number of P

The atomic number of phosphorus (P) is 15.

Step2: Consider the extra electrons due to the - 3 charge

Since it is \(P^{3 -}\), it has 15 + 3=18 electrons.

Step3: Write the electron - configuration

The electron - configuration of an atom with 18 electrons is \(1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}\).

Answer:

\(1s^{\wedge}22s^{\wedge}22p^{\wedge}63s^{\wedge}23p^{\wedge}6\)