Periodic Table: Father & Key Facts for UPSC & SSC

The Periodic Table is one of the most essential tools in science, helping scientists learn about the nature and properties of chemical elements. Today's periodic table features 118 chemical elements based on their properties and atomic structures.

Introduction & Concept Overview

Dmitri Mendeleev, a Russian scientist, introduced the concept of the periodic table in 1869. He was the first person to invent the periodic table, revolutionizing the world of chemistry. Mendeleev observed that some properties kept recurring periodically in elements when classified based on their atomic weight.

Complete List of Periodic Table Components

The periodic table is based on the periodic law, which accounts for the periodicity of properties among elements. The table is arranged according to atomic weights and periodic properties. Here is a breakdown of the periodic table components:

Historical Timeline & Evolution

The periodic table has undergone significant improvements since Mendeleev's time. The modern periodic table is based on electron configuration and atomic structure, making it more accurate and comprehensive.

Key Facts & Figures to Memorize

Here are some critical data and dates related to the periodic table

• Dmitri Mendeleev is known as the Father of the Periodic Table.
• The periodic table was introduced in 1869.
• The modern periodic table features 118 chemical elements.
• Gallium, scandium, and germanium were predicted by Mendeleev.

Memory Tricks & Mnemonics

To remember the periodic table, you can use the following mnemonic device: "Happy Henry Likes Beer" (Hydrogen, Helium, Lithium, Beryllium).

Frequently Asked in Exams

The periodic table is a common topic in SSC CGL, Railways, and UPSC exams. Here are some examples of how it may be asked:

• What is the significance of the periodic table in chemistry?
• Who is known as the Father of the Periodic Table?
• What are the key features of the modern periodic table?