Describe the chemical reactivity between potassium metal and helium gas

As surprissing as it can be, this chemical reactivity does not produce a single thing. This is so because Helium does not react with any metal as it is a noble gas.

Sorry i dont understand the question can you rephase it?

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.