Atomic Structure & Periodic Table Flashcards
1
Q
Mass Number
A
Protons + Neutrons
2
Q
Atomic Number
A
of protons
3
Q
Rutherford Model
A
- Electrons surround a nucleus.
4
Q
Bohr Model
A
- Described orbits in more detail.
5
Q
Farther orbits
A
Increased energy
6
Q
A photon is emitted when n…
A
Decreases
7
Q
A photon is absorbed when n…
A
Increases
8
Q
Heisenberg Uncertainty
A
It is impossible to know the momentum and position simultaneously.
9
Q
Hund’s Rule
A
Electrons only double up in orbitals if all orbitals first have 1 electron.
10
Q
Pauli Exclusion Principle
A
Paired electrons must be +1/2, -1/2.
11
Q
Avogadro’s Number
A
6.022 x 10^23 = 1 mol
12
Q
Planck’s (h)
A
6.626 x 10^-34 J/s
13
Q
Speed of Light (c)
A
3.0 x 10^8 m/s
14
Q
Maximum electrons in terms of n
A
2n^2
15
Q
Maximum electrons in subshell
A
4l+2
