atomic number
Example Sentences
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Science: Carbon is atomic number 6 on the Periodic Table of Elements.
From The Wall Street Journal ● Oct. 14, 2025
Notably, the team provided the first demonstration of a feature of lanthanide contraction in solution for the whole lanthanide series, including promethium, atomic number 61.
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 horizontal rows, meanwhile, arrange the chemicals in ascending order by the number of protons in their nuclei–what is known as their atomic number.
From "A Short History of Nearly Everything" by Bill Bryson
