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28 August, 21:23

When an atom of phosphorus becomes a phosphide ion (P3-), the radius

(1) decreases

(2) increases

(3) remains the same?

+3
Answers (1)
  1. 28 August, 21:52
    0
    Increases. Negative ions are usually larger than their elements' atoms because more electrons are added, increasing the atomic radius.
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