contrast
balance
Balance.
how describe art elements
Proportion I'd say.
The principle is known as movement.
Checks and Balances and Federalism both are separating the govenments power thus keeping the power out of one persons or a group of peoples hands
The rare earth elements are 17 proper elements, consisting of scandium, yttrium and the fifteen lanthanoids.All of the elements in the lanthanide and actinide series are considered "rare earth" elements
balance
symmetrical balance
periodic arranging
they are grouped by there collums
Dmitri Ivanovich Mendeleev.
elements
By arranging elements with increasing proton (atomic) numbers.
Henry G. J. Moseley
Steps of k-map include expressing the elements in a map and then arranging similar elements in the map.
Moseley arranged elements according to atomic number.Mendeleev arranged elements according to atomic mass.
The properties of elements are found to be periodic when arranged according to atomic number. Hence atomic number is considered as base for arranging the elements.
The weight of the nucleus and protons it contains. They are also placed in type order, so that similar property elements are together