A- atomic number. Atomic number represents how many protons are in the element, and they are arranged this way in the table in ascending order.
edit- on second thought they weren't technically known as atomic numbers until after he arranged them, so I guess the better answer in this case is d- mass. It's a trick question since today they're considered arranged by atomic number
It would be 4.6cgL not sure tho because I didint do that good in this
Answer:A(n) molecule that is made up of atoms that are chemically bonded is the smallest recognizable unit of a compound.
Explanation: