What is the iupac name for the compound shown below? a. 2-methyl-2,4-dipentene b. 2-methyl-1,4-pentadiene c. 4-methyl-1,3-pentadiene d. 4-methyl-2,4-pentadiene?

10 years is the answer

i belive it is water

answer: atomic mass was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

explanation:

originally atomic mass was used to arrange elements on the periodic table from left to right in a row. each column then shows similar properties of elements of a group.

in modern periodic table, the atoms are arranged in increasing atomic number. as atomic number represents the number of protons in an atom which is unique for every atom.