Which one of the following electronic configuration represents an element that will form a simple ion with -3 charge?
Correct answer: B. Is2, 2s2, 2p6, 3s2, 3p3
- A. Is2, 2s2, 2p6, 3s2, 3p1
- B. Is2, 2s2, 2p6, 3s2, 3p3
- C. Is2, 2s2, 2p6, 3s1
- D. Is2, 2s2, 2p1
Explanation
This configuration accurately represents the electronic configuration of phosphorus (P). It has 5 valence electrons in the 3s and 3p orbitals. To form a -3 charged ion, phosphorus would gain 3 electrons, resulting in a stable electron configuration by completing its octet: 1s² 2s² 2p⁶ 3s² 3p⁶.
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