How does atomic structure affect chemical reactions?
The number of protons determines the number of electrons which in turn forms the electron configurations that drive chemical reactions.
It is the structure of the electron configurations that drive chemical reactions. The electrons will freely to move between atoms in order to achieve stability. The movement and rearrangement of electrons are what causes chemical reactions.
The electronic configuration of the valance electron in Sodium is
To predict and understand how atomic structure affect chemical reactions it is helpful to think like an electron. The number of protons determines the number of electrons, which determines the electron configuration. The electron configuration will determine the types of chemical reactions which take place.