Chemistry 1301A/B Lecture 7: Chemistry 1301A Lecture 7 (Atomic structure and atomic theory)

• School: Western University
• Department: Chemistry
• Course: Chemistry 1301A/B
• Professor: Felix Lee

Document Summary

Chemistry 1301a lecture 7 (atomic structure and atomic theory) The electrons are pulled closer to the nucleus because of the increasing filling of other shells. With more protons in the nucleus, it creates a greater attraction of negativity- positivity relationship between the protons and the electrons. Important notes (the following 2 rules is in general) Cations are always smaller than the atoms from which they are formed. Anions are always smaller than the atoms from which they are formed. Energy is always absorbed when removing an electron from an atom. The first electron removed from a neutral atom is called the first ionization energy, and second electron removed is called second ionization energy, so on so forth.