QuestionAugust 3, 2025

Write the full electron configuration for P^3- E full electron configuration: square What is the atomic symbol for the noble gas that also has this electron configuration? atomic symbol: square

Write the full electron configuration for P^3- E full electron configuration: square What is the atomic symbol for the noble gas that also has this electron configuration? atomic symbol: square
Write the full electron configuration for P^3- E full electron configuration: square What is the atomic symbol for the noble gas that also has this electron configuration? atomic symbol: square

Solution
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Answer

E full electron configuration: 1s^2 \, 2s^2 \, 2p^6 \, 3s^2 \, 3p^6 ### atomic symbol: \text{Ar} Explanation 1. Determine the Atomic Number of Phosphorus Phosphorus (P) has an atomic number of 15. 2. Account for the Charge The P^{3-} ion has gained 3 electrons, making the total electron count 18. 3. Write the Electron Configuration For 18 electrons, the configuration is: 1s^2 \, 2s^2 \, 2p^6 \, 3s^2 \, 3p^6. 4. Identify the Noble Gas with the Same Configuration The noble gas with 18 electrons is Argon (Ar).

Explanation

1. Determine the Atomic Number of Phosphorus<br /> Phosphorus (P) has an atomic number of 15.<br /><br />2. Account for the Charge<br /> The $P^{3-}$ ion has gained 3 electrons, making the total electron count 18.<br /><br />3. Write the Electron Configuration<br /> For 18 electrons, the configuration is: $1s^2 \, 2s^2 \, 2p^6 \, 3s^2 \, 3p^6$.<br /><br />4. Identify the Noble Gas with the Same Configuration<br /> The noble gas with 18 electrons is Argon (Ar).
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