Sonu Sharma is the founder of DYNAMIC INDIA GROUP (INDIA). An Author, Educator, Business Consultant and a successful Entrepreneur, he is a much sought-after speaker. Today he is one of the Youngest Inspirational Speaker in India.
Valence is the number of electrons an atom must gain or lose in order to consummate its outer energy level or have a stable octet in its outer shell
A. <span>Exposure to an antigen
Exposure to viruses and antigens led to the foundation of modern vaccination. Vaccination introduces an antigenic material that helps the ability of the immune system to adapt a specific pathogen, therefore leading to a long-term immunity.</span>
The number of protons,neutrons,electrons, the way the are classified (earth metal, noble gas,meteoroids) and also the way they react.
