How many atoms of hydrogen are there in HCOOH2?

C: plants and animals

Decomposition is the cycle at which bacteria breaks down any organic material into the soil

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.