The modern periodic table consists of 7 horizontal periods and 16 vertical groups (18 vertical columns). The elements of the modern periodic table are classified into 4 blocks (s, p, d, and f).
The alkali metals are located on the left side of the modern periodic table in group (1) or (1 A). They are the first group of s-block, the alkali metals are monovalent elements as they...
The modern periodic table is a systematic arrangement of elements based on their atomic number, which reveals clear patterns in their physical and chemical properties. One of the most important trends observed in this...
The scientists classified the elements according to their properties to facilitate their study and to identify relationships between the elements and their chemical and physical properties. The modern periodic table was developed by Dmitri...
