what are the facts proposed by Kossel for the formation of ionic bond
Answers
The facts proposed by Kossel for chemical bonding are:
1. The highly electronegative halogens and the highly electropositive alkali metals are separated by noble gases.
2. Halogens can gain an electron and form negatively charged ions. While alkali metals can lose and electron and form positively charged ions.
3. These negatively and positively charged ions have a noble gas configuration, 8 electrons in the outermost shell. The electronic configuration of noble gases except helium is given by ns2np6.
4. Unlike charges attract each other so a strong force of electrostatic attraction holds these unlike charged particles together. For example, the magnesium ion and chlorine ions are held together by the force of electrostatic attraction MgCl2. This type of a chemical bond between two unlike charged particles is known as electrovalent bond.