How many electrons does  \({31}_{15}\)P\(^3-\) contain?

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Chemistry WAEC 2020

How many electrons does  \({31}_{15}\)P\(^3-\) contain?

  • 12
  • 15
  • 16
  • 18 checkmark

The correct answer is: D

Explanation

- Phosphorus also has 15 electrons. 

- Here we have P3- which means that this atom has gained 3 electrons. So, P3- has 18 electrons.

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