Chapter 6&7: Atoms, Ionic & Covalent Bonds Flashcards
(43 cards)
Name all of the atomic models in order.
Plum pudding model
Nuclear model
Planetary model
Electron cloud model/quantum mechanical model
Name the scientist that made the atomic model:
Plum pudding model-
Joseph John Thompson/J.J. Thompson
Name the scientist that made the atomic model:
Nuclear model-
Ernest Rutherford
Name the scientist that made the atomic model:
Planetary model-
Neils Bohr
Name the scientist that made the atomic model:
Electron cloud model/quantum mechanical model-
Erwin Schrodinger
What year was the plum pudding model proposed?
1904
What year was the Nuclear model proposed?
1911
What year was the planetary model proposed?
1913
What year was the electron cloud model/quantum mechanical model proposed?
1926
What does LEDS mean?
Lewis Electron-Dot System/Structure
What is the outer most electron called?
Valence electron
How do we determine the Valence electron of an element
Number of group= Valence electron (if it has double digits then disregard the first digit)
The total number of electrons that an atom can either gain or lose in order to form chemical bonds with another atom.
Oxidation number
What happens if the atom gains or loses an electron/s?
It becomes an ion
An atom that gives/loses an electron.
Cation
An atom that receives/gains electrons.
Anion
Metallic elements usually give electrons, they are (cations, anions)
Cations
Oxidation number of Calcium
Ca’2+
Oxidation number of Nitrogen
N’3-
Valence electron of Hydrogen
1
Valence electron of Oxygen
6
Oxidation number of Oxygen
O’2-
The tendency of atoms to prefer to have eight electrons in the valence shell. Also known as the rule of eight.
Octet rule
Who use the gold foil method and found that the atom is mostly empty space and has a mass of positively charged center?
Ernest Rutherford
