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.
To take the above further, you'll answer questions about: 1  What an element's atomic number indicates. 2  Atoms with different numbers of neutrons. 3  What Moseley's Law says.  How the periodic table is organized.