How are elements organized on the periodic table? Select all that apply. into periods or horizontal rows that share a pattern by order of relative abundance of the element on Earth into order of densities from lowest to highest into vertical groups of elements that have similar physical and chemical properties by increasing order of atomic number

Aproduction line at v. j. sugumaran's machine shop has three stations. the first station can process a unit in 7 minutes. the second station has two identical machines, each of which can process a unit in 16 minutes (each unit only needs to be processed on one of the two machines). the third station can process a unit in 10 minutes. ▼ is the bottleneck station, with a bottleneck time of nothing minutes per unit (enter your response as a whole number).