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Electron Configuration HELP!

Hey!

I REALLY need help with a homework question, I've tried endlessly Googling for something but can't find anything so now I turn to you, good people of TSR. :biggrin:

So my question is this..

Write the symbol for the ion with a 2+ charge which has the electronic configuration 1s2 2s2 2p6.

Any help would be HUGELY appreciated, thank you in advance!

Reply 1

DrAdrenaline

Original post by givemeknowledge

Hey!

I REALLY need help with a homework question, I've tried endlessly Googling for something but can't find anything so now I turn to you, good people of TSR. :biggrin:

So my question is this..

Write the symbol for the ion with a 2+ charge which has the electronic configuration 1s2 2s2 2p6.

Any help would be HUGELY appreciated, thank you in advance!

2+ charge mean it lost 2 electrons. So initially It had 1s^2 2s^2 2p^6 3s^2. That's the electronic configuration of Mg so your answer is Mg2+ when it lost its two electrons.

Reply 2

givemeknowledge

Original post by swopnil

2+ charge mean it lost 2 electrons. So initially It had 1s^2 2s^2 2p^6 3s^2. That's the electronic configuration of Mg so your answer is Mg2+ when it lost its two electrons.