100 points on periodic table
Most important 100 points on periodic table Find here most important 100 short questions on periodic table: 1. The periodic table is a tabular arrangement of chemical elements, organized based on their atomic number, electron configuration, and recurring chemical properties. 2. It was first proposed by Russian chemist Dmitri Mendeleev in 1869. 3. The modern periodic table consists of 118 elements, including 94 naturally occurring elements and 24 synthetic elements. 4. Elements are arranged in order of increasing atomic number from left to right and top to bottom. 5. Each element is represented by its chemical symbol, which is derived from its name. 6. Elements in the same vertical column are called groups or families and have similar chemical propert...