First proposed by Russian chemist Dmitri Mendeleev in 1869, the periodic table is a tabular arrangement of the elements according to their atomic numbers so that elements with similar properties are in the same column. The manner in which the elements and their atomic numbers are listed and grouped actually make the table a cheat sheet. Making it easier to remember without having to memorize each element.
A periodic table is a tabular display of the chemical elements, organized on the basis of their atomic numbers, electron configurations, and recurring chemical properties. Elements are presented in order of increasing atomic number. The standard form of table comprises an 18 7 grid or main body of elements, positioned above a smaller double row of elements. The table can also be deconstructed into four rectangular blocks: the s-block to the left, the f-block to the south, the d-block in the centre, and the p-block on the right. Most of the columns and rows of the table have specific names: main body columns are called groups (such as the halogens or the noble gases); horizontal rows are called periods. Using periodic (recurring) trends, the periodic table can help predict the properties of various elements and the relationships between properties.
The horizontal rows in the periodic table are called periods!
There are only two liquids on the periodic table at standard temperature and...
Metals make up the majority of the periodic table. The chemical elements can be...
Chemistry answer: KH_2PO_4. Source: Wolfram|Alpha
Chemistry answer: Hg. Source: Wolfram|Alpha