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7 December, 01:41

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

(1) decreases

(2) increases

(3) remains the same?

+3
Answers (1)
  1. 7 December, 05:23
    0
    Increases. Negative ions are usually larger than their elements' atoms because more electrons are added, increasing the atomic radius.
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