ELECTRONIC CONFIGURATION

The electron configuration of an atom is $1s^22s^22p^6$ The number of electrons in the atom is 

• 3

• 5

• 6

• 10

An orbital can at most hold how many electrons?

• 1 electron

• 2 electrons

• 3 electrons

• 4 electrons

What is the Aufbau principle?

• Within an energy level, s orbitals are the lowest energy, followed by p, d and then f. F orbitals are the highest energy for that level.

• All three.

• The lower the principal quantum number (n) the lower the energy.

• The Aufbau Principle states that electrons enter the lowest energy orbitals first.

Identify the rule that is being violated

• Aufbau's Principle

• Pauli's Exclusion Principle

• Hund's Rule

• Heisenberg uncertainty principle

What is incorrect about this orbital diagram?

• Both arrows in the filled 2p box should be pointing the same direction

• In the there should only be 1 arrow in the first 2p box and one in the 2nd 2p box

• There is nothing incorrect with this diagram

• All the arrows should be pointing the same direction.

All orbitals of equal energy (degenerate orbitals) are occupied by one electron before any single orbital is occupied by a second electron.

• Aufbau Principle

• Hund’s Rule

• Pauli's Exclusion Principle

• Core Notation

Which rule is violated in the following orbital diagrams?

• Hund's Rule

• Pauli's Exclusion Principle

• Aufbau Principle

Which of the following describes the shape of the orbital?

• principal quantum number

• azimuthal quantum number

• spin quantum number

• magnetic quantum number

Which quantum number describes the behavior of a specific electron and completes the description of electrons in atoms?

• n

•  $m_l$  
  

• l

•  $m_s$  
  

How many orientations in the f-orbital?

• 1

• 3

• 5

• 7