Miscellaneous Tends and Rules

Question 1

Trend of Electron Affinity

Answer 1

Electron affinity
X (gas) + e- →X^- (gas)
- increases across the periodic table (Size decreases, Z(eff) increases, more energy holding elecrons close)
- Decreases down the periodic table

Question 2

Trends in Ionization energy

Answer 2

X (gas) + energy → X^+ + e-

Decreases fown a group
- # of core e increases, sheilding increases, attraction felt by outer electrons decreases

Increases across a period
- Z (eff) increases
- Nuclear attraction felt by outer e increases

Question 3

Define

Dimagnetic

Answer 3

All electrons are paired in an atom or molecule
- Very little magnetic charge by itself

It is repeled by magnetic fields

Question 4

Define

Paramagnetic

Answer 4

Not all electrons are paired
- Attracted to magnetic fields

Question 5

What is the order of electron configuration?

Answer 5

• 1s
• 2s 2p
• 3s 3p 3d
• 4s 4p 4d
• 5s 5p 5d 5f
• 6s 6p 6d 6f

Draw diagonal lines going from top left to bottom right for the right order

Question 6

Principle Quantum Number

Answer 6

n

Defines the size and energy of the orbital

Question 7

Angular Momuntum

Answer 7

l

Describes shape (type) of the orbital

This is your s, p, d, and f orbitals

Limited by 0 to (n-1)

Question 8

Magnetic Quantum Number

Answer 8

The 3D orientation of the orbital

m(l)

limited by m(l) = -l to +l

Question 9

Electron Spin Quantum number

Answer 9

m(s)

The orientation of the electron in the orbital

m(s) = -1/2 or +1/2