{"id":249752,"date":"2025-07-09T20:18:14","date_gmt":"2025-07-09T20:18:14","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=249752"},"modified":"2025-07-09T20:18:17","modified_gmt":"2025-07-09T20:18:17","slug":"the-electron-configuration-of-the-p3-ion-is","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/07\/09\/the-electron-configuration-of-the-p3-ion-is\/","title":{"rendered":"The electron configuration of the P3- ion is"},"content":{"rendered":"\n

The electron configuration of the P3- ion is 1s2 2s2 2p6 3s2 1s2 2s2 2p6 3d2 3p6 none of the answers are correct 1s2 2s2 2p6 3d5 3p3<\/p>\n\n\n\n

The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n

The correct electron configuration of the P\u00b3\u207b ion is:<\/p>\n\n\n\n

1s\u00b2 2s\u00b2 2p\u2076 3s\u00b2 3p\u2076<\/strong><\/p>\n\n\n\n

Here\u2019s why:<\/p>\n\n\n\n

Phosphorus (P) has an atomic number of 15, meaning its neutral atom has 15 electrons. The electron configuration for neutral phosphorus is:<\/p>\n\n\n\n

1s\u00b2 2s\u00b2 2p\u2076 3s\u00b2 3p\u00b3<\/strong><\/p>\n\n\n\n

This means it has 2 electrons in the first shell (1s\u00b2), 2 electrons in the second shell (2s\u00b2), 6 electrons in the second shell\u2019s p orbitals (2p\u2076), 2 electrons in the third shell\u2019s s orbital (3s\u00b2), and 3 electrons in the third shell\u2019s p orbital (3p\u00b3).<\/p>\n\n\n\n

When phosphorus forms a P\u00b3\u207b ion, it gains three additional electrons to fill its outermost 3p orbital. The added electrons go into the 3p orbital, completing it, which now contains 6 electrons in total. So, the electron configuration of the P\u00b3\u207b ion is:<\/p>\n\n\n\n

1s\u00b2 2s\u00b2 2p\u2076 3s\u00b2 3p\u2076<\/strong><\/p>\n\n\n\n

This configuration matches the electron configuration of the noble gas Argon (Ar), which is the stable configuration for the P\u00b3\u207b ion.<\/p>\n\n\n\n

Regarding the other options:<\/p>\n\n\n\n