atomic number

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

One of the most critical rare earths is dysprosium, atomic number 66 on the periodic table.

From The Wall Street Journal • Oct. 11, 2025

Thus, they exposed the secrets of this extremely rare lanthanide, whose atomic number is 61, in a series of meticulous experiments.

From Science Daily • May 22, 2024

Katie Hafner: Uranium is the last of the naturally occurring elements on the periodic table, with an atomic number of 92.

From Scientific American • Sep. 7, 2023

For in truth, how does it really benefit most of us to know why sodium’s atomic number is 11 and magnesium’s 12?

From Washington Post • Apr. 28, 2023

The chemistry of an atom depends only on the number of electrons, which equals the number of protons, and which is called the atomic number.

From "Cosmos" by Carl Sagan