Electron Unit Test Review

Front

What group in the periodic table contains elements with full valence shells in the ground state?

Back

Group 18

Front

What are the particles that make up light?

Back

Photons

Front

According to Hund's rule, how are three electrons distributed in the 2p orbitals?

Back

Each electron will occupy separate orbitals with parallel spins.

Front

What is the correct electron configuration for an oxygen (O) atom?

Back

1s² 2s² 2p⁴

Front

What is the highest occupied energy level for an oxygen atom?

Back

3

Front

Define valence shell.

Back

The outermost shell of an atom that contains the valence electrons.

Front

What is the significance of the octet rule?

Back

Atoms tend to gain, lose, or share electrons to achieve a full outer shell of eight electrons.

Front

What is an electron configuration?

Back

A representation of the distribution of electrons in an atom's orbitals.

Front

What is the principle behind the Aufbau principle?

Back

Electrons fill the lowest energy orbitals first before moving to higher energy orbitals.

Front

What is the difference between a photon and a neutron?

Back

A photon is a particle of light with no mass, while a neutron is a subatomic particle found in the nucleus of an atom with mass.