Problem: An accepted abbreviation format is to write an electron configuration that includes a noble gas symbol in brackets. If you were writing an electron configuration for a iodine atom, which elemental symbol would you place in the bracket? Ar Xe He Ne Kr 

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First, we need to find Iodine (I) in the periodic table. 



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Problem Details

An accepted abbreviation format is to write an electron configuration that includes a noble gas symbol in brackets. If you were writing an electron configuration for a iodine atom, which elemental symbol would you place in the bracket? 


Ar 

Xe 

He 

Ne 

Kr 

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