Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
25 Cards in this Set
- Front
- Back
|
What question did Stern and Gerlach help answer?
|
How many electrons can go in each orbital.
|
|
|
What is the Stern-Gerlach experiment?
|
When a beam of silver atoms is passed through a strong inhomogeneous magenetic field
|
|
|
What did the Stern-Gerlach experiment investigate?
|
Whether atoms were magnetic and how they responded to the fields
|
|
|
What does the Pauli Exlusion Prinicple explain?
|
It explains chemistry in the sense of who electrons interact
Tells how many electrons can occupy an orbital |
|
|
Can electrons have the same quantum number?
|
No
|
|
|
Hund's Rule
|
Electrons won't pair up in an orbital unless they have to
When they are in separate orbitals, both spin in the same direction. Occupy degenerate orbitals singly (where possible) |
|
|
Valence electrons
|
participate in chemical reactions
|
|
|
Elements with similar valence?
|
have similar chemical properties
|
|
|
Which elements are the "wrinkles" in electron configuration?
|
Cr, Cu, Ag
|
|
|
period trends with size
|
increases as going down and from left to right
|
|
|
Ionization energy periodic trends
|
decreases going down and from left to right
|
|
|
endothermic (2)
|
loss of electrons
requires energy |
|
|
Lattice energy
|
energy needed to form ionic crystal
|
|
|
Born-Haber Cycle
|
way of calculating Lattice energy
|
|
|
positive ions + negative ions = ?
|
ionic solid
|
|
|
1st law of thermodynamics
|
energy is concerved. it is neither lost or gained
|
|
|
electrostatic attractions
|
effects the control of lattice energy
|
|
|
high lattice energy (4)
|
difficult to pull apart
high boiling/melting point strong materials insoluble in water |
|
|
refactory materials
|
high melting points and are very hard
|
|
|
Limelights (4)
|
CaO
High melting point light stage theatres back in the day bright light |
|
|
Coleman Lamp (3)
|
ThO (sub 2)
high lattice energy bright light |
|
|
low lattice energy (3)
|
low melting point
soluble in water still solid @ room temp. |
|
|
Madelung factor
|
M in energy equation
1.5-2.0 |
|
|
soluble
|
low lattice energy
low charge d factor is large polyatomic ion |
|
|
unsoluble
|
high lattice energy
high charge d factor is small monoatomic |
