Dalton's Law and the Ideal Gas Law At what pressure will 4.80 moles of fluorine gas have a volume of 60.0 liters and a temperature of 298 K?

its first and third is your answer i did the qustion the fourth isnt right

i think it's c. if you look search electronic symbol on google and then click on wiki it shows you a

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.