Midterm Vocab Flashcards
1
Q
Hund’s Rule
A
All orbitals of equal energy are occupied by one electron before any single orbital is occupied by a second electron.
2
Q
Pauli Exclusion Principle
A
No two electrons in the same atom can have the same four quantum numbers.
3
Q
Bohr Model of the Atom
A
The single electron of hydrogen circles the nucleus only in allowed orbits, each with a fixed energy.
4
Q
Aufbau Principle
A
An electron occupies the lowest energy orbital that can receive it.
5
Q
Ionization Energy
A
Amount of energy it takes to ionize a substance.
6
Q
Electronegativity
A
Ability to attract e- from chemical cpd
7
Q
Electron Affinity
A
Energy change when e- is acquired by an atom.
8
Q
Electron Shielding
A
Attraction between an electron & the nucleus in any atom with more than one electron.
