darius8882 darius8882
  • 24-10-2017
  • Chemistry
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How many electrons will a calcium (ca) atom gain or lose in forming an ion?

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Louli
Louli Louli
  • 03-11-2017
Calcium has an atomic number 20. This means that calcium has 20 electrons.
The electronic configuration of these 20 electrons is as follows: 2,8,8,2

For the calcium to become stable, it should have eight electrons in its outermost energy level.
Based on this, calcium loses two electrons to form an ion and become stable.
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