Chemistry 211 Test #3
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- Who explained the energy profiles by assuming that the energy of an objects can be changed only in discrete amounts?
- Planck
- Who is associated with the photoelectric effect?
- Albert Einstein
- Who developed the quantum theory?
- Planck
- Who demonstrated photon momentum?
- Compton
- Who proposed the atomic model?
- Bohr
- Who developed the wave theory of matter?
- De Broglie
- What is the first quantum number?
- The principal quantum number
- The second quantum number?
- Angular momentum quantum number
- Third?
- Magnetic quantum number
- The number of possible "L" values for 2nd quantum number =?
- The value of "n" (the first quantum number)
- L=1?
- "p" sublevel
- L=0?
- "s" sublevel
- L=2?
- "d" sublevel
- L=3?
- "f"" sublevel
- What color is between 400 and 434 nm on the color spectrum?
- Violet
- 434 and 486 nm?
- Blue
- 486 and 575 nm?
- Green
- 575 and 600 nm?
- Yellow
- 600 and 660 nm?
- Orange
- 660 and 750 nm?
- Red
- What is the order of the types of waves from lowest to highest?
- Gamma < X-Ray < Ultra-violet < Visible < Infrared < Microwave < Radio
- Which principle states that electrons are added to lowest energy orbital available?
- Aufbau Principle
- Which rule states that each electron fills each orbital until they are each half-filled until beginning to fill the rest of the way up?
- Hund's Rule
- Which principle states that no two electrons in the same atom can have the same four quantum numbers?
- Pauli's Exclusion Principle
- What is the trend of the ionization energy?
- Increases Up and to the right
- What is the trend of the atomic size?
- Increases Down and to the left
- What is the trend of electron affinity [more exothermic (negative)]?
- Increases Up and to the right
- What is the trend of metallic behavior?
- Increases Down and to the right
- What is the trend of the tendency to form anions and cations?
-
Anions - up and to the right (A increases)
Cations - down and to the left (I decreases) - Which elements tend to form basic oxides?
- Metals
- Which elements tend to form acidic oxides?
- Nonmetals
- Which elements tend to form amphoteric oxides?
- Metalloids
- What is the trend of sizes of ions?
- Increases down and to the left. (Cat.s are small) (An.s are larger)
- What are atoms and ions with the same number of electrons (have the same electron configuration)?
- Isoelectric species.
- What is the trend of the sizes of isoelectric species?
- Size decreases with increasing the atomic number of the element.
- What do Lattice Energy trends base themselves on?
- They base themselves on ionic charge mainly, and then on size.
- What type of bonding produces: hardness, brittleness, rigidity, lack of conducting when solid, but conduction when melted or dissolved, and very high melting and boiling points?
- Ionic compounds
- Boil and melt at low temperatures, poor electrical conductors, and are not hard?
- Covalent compounds
- Hard, malleable, and ductile, moderately high melting temp., very high boiling temp., and good conductors?
- Metallic compounds
- What is the trend of electronegativity?
- Up and to the right