Question

1- What controls the reactivity or how like an element is to bond with another element?

2- How many electrons make an energy level stable (happy) ?

3- when elements bond, what happens to the valence electron shell of each of the elements in the bond?

Answer 1

Answer: The number of electrons in the outermost shell of a particular atom determines its reactivity, or tendency to form chemical bonds with other atoms. This outermost shell is known as the valence shell, and the electrons found in it are called valence electrons.

Explanation:

The number of electrons in the outermost shell of a particular atom determines its reactivity, or tendency to form chemical bonds with other atoms. This outermost shell is known as the valence shell, and the electrons found in it are called valence electrons.