CAS CH 102 Lecture Notes - Lecture 12: Atomic Radius, Atomic Number, Electronegativity
Document Summary
Electrons have certain areas called orbitals where they are most likely to be found. Focuses on what electrons do rather than what they are. Number of protons is the atomic number. Subtracting the atomic mass by the atomic number would give you the mass of neutrons. Negatively charged goes in orbitals around the nucleus. Electrons are essential for atoms to bond. Number of electrons = number of protons. *only exception is hydrogen (has one electron in first shell) energy increases from top to bottom* Determine the abundance of each element you have and multiply that amount by its mass. Add the product of each element together and divide % by 100 so 60% = . 6. Average atomic mass is an average if it isn"t in between your two values, then you did something wrong. Same amount of protons, but different number of neutrons, leading to a different mass.
