zahraaim29
zahraaim29 zahraaim29
  • 19-03-2019
  • Chemistry
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What elements form ions with a charge of –1?

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bigsistina bigsistina
  • 19-03-2019

The halogens (VIIA elements) all have seven valence electrons. All the halogens gain a single electron to fill their valence energy level. And all of them form an anion with a single negative charge.

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