An unexcited atom has its most energetic two electrons in the 3s orbital. How many electrons does it have?.

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The answers are 3.c kelvin4.b liquids only

Hello thereone of the following properties was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version. which property fits this description? answer: atomic mass  was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

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