2.2

Question 1

What are quantum numbers

Answer 1

Used to describe the location of electrons

Question 2

Principal quantum number

Answer 2

• “n”
• positive whole number
• relates to main energy level occupied by electron

Question 3

Angular momentum quantum number

Answer 3

• “l”
• describes the orbitals general shape or region that the electron is occupying.
• “l” depends on “n”.
• whole number ranges from 0 - n -1.
• number of sub levels is equal to “n” ex. If n=3, l=0,1,2

Question 4

Magnetic quantum number

Answer 4

• “ml”
• describes the orientation of an atomic orbital.
• ranges between -l to +l including 0.
• ex. If “l” = 2 then “ml” ranges from -2, -1, 0, 1, 2

Question 5

Spin quantum number

Answer 5

• “ms”
• either +1/2 or -1/2. Can’t be 0.