Richard Louie Chemistry Lectures-Electron Configuration

How many energy levels do electrons occupy?

• Three

• Four

• Five

• Two

How many sub-levels are there in the energy level of the fourth row?

How many orbitals does the s-sub-level have?

• Two

• One

• Four

• Three

How many orbitals does the p-sub-level have?

• Three

• Four

• Two

• One

How many orbitals does the d-sub-level have?

• Three

• Four

• Five

• Six

How many orbitals does the f-sub-level have?

• Seven

• Six

• Five

• Eight

According to the aufbau principle, how do electrons fill the orbitals?

• From right to left

• From top to bottom

• From left to right

• From bottom to top

What is the maximum number of electrons that can occupy an orbital?

• Two

• Three

• One

• Four

What is the rule that states all the orbitals of a sub-level must contain at least one electron before a second electron can be placed in any orbital?

• Hund's rule

• Pauli exclusion principle

• Bohr's rule

• Aufbau principle

What is the atomic number of the element with the electron configuration 1s2 2s2 2p6 3s2 3p5?

• 18

• 16

• 15

• 17