Draw a 120mm long line AB at an angle of 35degree from the horizontal. Then, draw a line parallel to AB which is 25 mm away from AB

Hope the image of the frequency formula

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.