Chemistry help: Magnesium 2+ ion Electron config

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science_geeks
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#1
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#1
Hi everyone,

Please can someone help me understand why the electronic config of Mg2^+ is 1s2 2s2 2p6 3s2?
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I did a question (see pic) where I selected option B, because I thought that the 2+ ion means 10 electrons which matched option B's electron config but the right answer is C.. please can someone help explain.

Thanks in advance! Name:  Screenshot 2020-06-13 at 14.56.44.png
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Pigster
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#2
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#2
(Original post by science_geeks)
Hi everyone,

Please can someone help me understand why the electronic config of Mg2^+ is 1s2 2s2 2p6 3s2?
cancel
I did a question (see pic) where I selected option B, because I thought that the 2+ ion means 10 electrons which matched option B's electron config but the right answer is C.. please can someone help explain.

Thanks in advance! Name:  Screenshot 2020-06-13 at 14.56.44.png
Views: 13
Size:  41.9 KB
The answer IS B.

Anyone who says otherwise has made a mistake.
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science_geeks
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#3
Report Thread starter 1 year ago
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(Original post by Pigster)
The answer IS B.

Anyone who says otherwise has made a mistake.
Thank you! I thought as much
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