Uranium-235 with the atomic number blank

An example figure from the Nuclide Notation generator.

The nuclide symbol for uranium-235: U with mass number 235 at the top left and an empty box at the bottom left for the atomic number — The nuclide symbol for uranium-235, the isotope used in nuclear reactors, with its atomic number left as an empty box at the bottom left. Students look up uranium’s atomic number, 92, and write it in.

Edit this figure Download PNG

Editing opens it in Nuclide Notation with these settings, to change anything and copy or download your own.

Answer key

Uranium-235 atom
92 protons, 143 neutrons, 92 electrons
Blank: atomic number 92

Free to use in your tests, worksheets, slides or anything else, no credit needed. Public domain under CC0 1.0. How to reuse our figures

More Nuclide Notation examples

Make your own in Nuclide Notation →