Development Of Quantum Theory Flashcards
Heisenberg Uncertainty Principle
States that it is impossible to know simultaneously both the momentum p and the position x of a particle with certainty.
Orbital
A region where an electron is likely be found because we can’t know exactly where an electron is at any given time.
What are quantum numbers of an atom?
Used to determine electron configuration of an tom and the probable location of the atom’s electrons.
Principal Quantum #?
n, which defines size/energy level.
Angular Momentum Quantum #?
l, which defines shape.
Magnetic Quantum #?
m subscript l, defines orientation.
Electron Spin Quantum #?
m subscript s, defines specific electron.
Larger n = in terms of size?
Larger orbital
Larger n = in terms of energy?
Higher energy level
What is the allowed values for n as an integer?
Starting with 1
What is a shell in terms of n?
Collection of orbitals with the same value of n.
What is a typical shape of s orbital?
Sphere shaped.
What is a typical shape of p orbital?
Dumbbell shaped.
What is typical shape for d orbital?
Cloverleaf shaped.
What is a typical shape for f orbital?
Tetrahedral shaped.
What are possible l values if n = 1? What are possible orbital values?
0, s
What are possible l values if n = 2? What are possible orbital values?
0,1 and s,p
What are possible l values if n = 3? What are possible orbital values?
0,1,2 and s,p,d
What are possible l values if n= 4? What are possible orbital values?
0,1,2,3, and s,p,d,f
Shell
A shell that holds subshells.
Subshells
Subshells that hold electrons and there are types of subshells that move along the shells (s,p,d,f).
How many possible orientations does s orbitals have?
1 possible orientation, so only one s orbital in an s subshell.
How many possible orientations does p orbitals have?
3 Different orientations, so three p orbitals in each p subshell.
How many possible orientations does d orbitals have?
5 Different orientations so five d orbitals in each d subshell.
How many possible orientations does f orbitals have?
7 Different orientations so seven f orbitals in each f subshell.
What are the possible values of m sub l if l = 1? What are possible orbitals?
0, and s orbital.
What are the possible values of m sub l if l = 1? What are possible orbitals?
-1, 0, 1 and 3 p orbital positions.
What are the possible values of m sub l if l = 2.? What are possible orbitals?
-2,-1,0,1,2 and 5 d orbital positions.
What are the possible values of m sub l if l = 3? What are possible orbitals?
-3,-2,-1,0,1,2,3 and 7 different orbital positions.
What is m sub s?
Specifies the spinning orientation of the electron, either as -1/2 or +1/2. (spin up or spin down).
