in 1869 periodic trends in the properties of the then-known elements
it's called the periodic table obviously
Because the elements progress in a periodic function.
A Periodic table The Periodic Table of the Elements.
The Periodic Table is arranged like it is for a specific reason. It is probably called the Periodic Table because it is made up of "periods" or horizontal rows.
Because in the table the elements are arranged into "periods", elements belonging to the same period have similar physical/chemical properties. This in tern reflects the fact that they have a similar number of outer shell electrons.
It is called the Periodic Table of Elements.
The rows on the periodic table are called periods
It is called the key of life because all the elements or compounds of the elements of on the periodic table make up the world.
groups
Columns in the periodic table are called "groups" and there are 18 groups in the periodic table.
The columns in the periodic table are groups, also called families because the elements in a group have similar properties.
It is arranged such that similar elements with similar preferred bonding arrangements are aligned vertically. This exposes the various s, p, d, and f bonding orbitals for each successive "exterior" shell, and so appears to repeat... hence "periodic".