QUANTUM NUMBERS

3 2 1 1/2

the principal quantum number is

• 3

• 2

• 1

• 1/2

3 2 1 1/2

describes the size of the orbital

• 3

• 2

• 1

• 1/2

3 2 1 1/2

describes the orientation in space of a particular orbital

• 3

• 2

• 1

• 1/2

describes the shape of the orbital

• principal

• angular momentum

• magnetic

• magnetic spin

describes the spin for a given electron and takes on

either a value of +1/2 or a -1/2

• principal

• angular momentum

• magnetic

• magnetic spin

the first quantum number and the main energy level occupied

• principal

• angular momentum

• magnetic

• magnetic spin

Which of the following quantum number is NOT POSSIBLE

• 2 0 0

• 3 2 0

• 3 3 3

• 2 1 -1

Which of the following quantum number is POSSIBLE

• -1 0 0

• 3 2 2

• 3 3 1

• 2 1 -2

in the ground state of an atom or ion, electrons fill atomic orbitals of the lowest available energy level before occupying higher-energy levels

• Hund's Rule

• Aufbau's Principle

• Pauli's Exclusion Principle

it is impossible for two electrons of a multi-electron atom to have the same set of values for all four quantum numbers

• Hund's Rule

• Aufbau's Principle

• Pauli's Exclusion Principle