Let's Burn 52 Calories! 1  11 mins. Swimming, treading water, moderate effort. 2  6 mins. Running, general. 3  6 mins. Bicycling, general. 4  14 mins. Walking, 2.5 mph, level, firm surface.
It is also worthy to note that Mendeleev's 1871 arrangement was related to the atomic ratios in which elements formed oxides, binary compounds with oxygen whereas today's periodic tables are arranged by increasing atomic numbers, that is, the number of protons a particular element contains.t is also worthy to note that Mendeleev's 1871 arrangement was related to the atomic ratios in which elements formed oxides, binary compounds with oxygen whereas today's periodic tables are arranged by increasing atomic numbers, that is, the number of protons a particular element contains.
Picture courtesy of The Manhattan Project. Elements by Name Elements by Number Elements by Energy Levels Home. The Periodic Table of Elements is a chart created by Dmitri Mendeleev in 1869 to help organize the elements that had been discovered at that time. First we have to understand what an element is.All matter is made up of elements, which are substances with only one type of atom.icture courtesy of The Manhattan Project. Elements by Name Elements by Number Elements by Energy Levels Home. The Periodic Table of Elements is a chart created by Dmitri Mendeleev in 1869 to help organize the elements that had been discovered at that time. First we have to understand what an element is.