Electron Configuration Quiz

What is the arrangement of electrons in an atom called?

• Molecular arrangement

• Electron configuration

• Atomic structure

• Nuclear configuration

Which principle states that each electron occupies the lowest energy orbital available?

• Quantum theory

• Aufbau principle

• Pauli exclusion principle

• Hund's rule

What does an empty box in an orbital diagram represent?

• A filled orbital

• An unoccupied orbital

• A half-filled orbital

• An occupied orbital

According to Hund's rule, what must happen before additional electrons can occupy the same orbital?

• Electrons must have opposite spins

• Single electrons must occupy each equal-energy orbital

• Electrons must be paired

• All orbitals must be filled

What is noble-gas notation used for?

• To illustrate chemical bonds

• To describe atomic mass

• To represent electron configurations

• To show molecular structures

Which element has the electron configuration [Ar]4s13d5?

• Iron

• Vanadium

• Chromium

• Copper

What are valence electrons?

• Electrons in the nucleus

• Electrons that are unpaired

• Electrons in the outermost orbitals

• Electrons in the inner shells

How many valence electrons does a sulfur atom have?

• 4

• 2

• 6

• 8

What does an electron-dot structure represent?

• All electrons in an atom

• Only valence electrons

• Nuclear structure

• Chemical bonds

Which of the following represents the electron configuration for neon?

• [Ne] 1s2 2s2

• [He]

• [Ne] 1s2 2s2 2p6

• [Ar] 4s2 3d10