The document discusses periodic trends of elements in the periodic table. It defines key concepts like atomic number, mass number, and electronic configuration. It also defines ionization energy as the energy required to remove an electron from an isolated gaseous atom in its ground state. The document provides references for images and definitions from sources like Google images and the 11th grade chemistry NCERT book.

1. Understanding The periodic trends of elements in the periodic
table
By
I.G.SHANMUGAPRIYA,
RESEARCH SCHOLAR,
SSCU

2. Basics
• Atom
• Electron and proton and neutron
• Atomic number and Mass number
• Electronic configuration
• Exothermic and Endothermic Reactions

3. Electronic configuration

4. Ref: Google image

5. Ref: Google image

6. Ref: 11th CHEMISTRY NCERT BOOK

7. Ionization energy or enthalpy
Definition: The energy required to remove an electron
from an isolated gaseous atom (X) in its ground state