Electron Configuration and Orbital Notation Challenge

What information does an electron configuration symbol contain?

• Orbital type, number of neutrons, and energy level

• Principal quantum number, orbital type, and number of electrons

• Number of electrons, energy level, and atomic mass

• Principal quantum number, orbital type, and number of protons

In an orbital diagram, what do the clusters of boxes represent?

• Neutrons

• Subshells

• Energy levels

• Protons

According to the Aufbau principle, which orbital is filled first?

• 2s

• 2p

• 3s

• 1s

What does the Pauli Exclusion Principle state?

• Electrons fill orbitals from highest to lowest energy

• No two electrons can have the same four quantum numbers

• Electrons prefer to be in the same orbital

• Electrons have the same spin in the same orbital

What is Hund's Rule?

• Electrons fill orbitals from highest to lowest energy

• Electrons fill orbitals with opposite spins

• Electrons fill degenerate orbitals singly first with parallel spins

• Electrons fill the s orbitals before p orbitals

What is the electron configuration for carbon?

• 1s2 2s2 2p1

• 1s2 2s2 2p6

• 1s2 2s2 2p4

• 1s2 2s2 2p2

Which element has the electron configuration 1s2 2s2 2p6 3s2 3p1?

• Magnesium

• Aluminum

• Silicon

• Sodium

Why does chromium have an unusual electron configuration?

• It has a full 3d subshell

• It has more protons than electrons

• It promotes one of its 4s electrons to achieve a half-filled 3d subshell

• It fills the 4s orbital before the 3d orbital

What is the noble gas notation for manganese?

• [Ne] 3s2 3p6 4s2 3d5

• [Ar] 4s2 3d5

• [Kr] 4s2 3d5

• [Ar] 3d5 4s2

Why are noble gases used in shorthand electron configurations?

• They have the highest atomic numbers

• They have a full octet in their valence shell

• They have incomplete valence shells

• They are the most reactive elements