Describe any element and get a clean, labeled Bohr model in seconds, with the nucleus drawn, concentric electron shells placed, and electron counts filled in correctly. Perfect for chemistry class, worksheets, and study guides.
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Carbon (atomic number 6) with 2 electrons in the first shell and 4 in the second, all labeled.
Oxygen (atomic number 8): 2 electrons in shell 1 and 6 in shell 2, labeled.
Sodium (atomic number 11) across three shells: 2, 8, 1, demonstrating the 2-8-8 filling rule.
Hydrogen: the simplest Bohr model, one proton in the nucleus and one electron in shell 1.
A teaching diagram with callout labels pointing to the nucleus, protons, neutrons, electrons, and each shell.
A printable blank template with empty shells and nucleus for students to complete themselves.
Start with one of these element, ion, or worksheet prompts, then change the atom or labels for your lesson.
A precise, labeled model for a standard chemistry assignment.
Create a labeled Bohr model of magnesium (Mg, atomic number 12). Show a nucleus with 12 protons and 12 neutrons, then three electron shells containing 2, 8, and 2 electrons. Label the element symbol, nucleus, each shell, and electron count. Classic textbook style, white background.
Show how losing an electron changes the outer shell.
Create a side-by-side Bohr model comparison of a neutral sodium atom and a sodium ion, Na+. Neutral sodium has 11 protons, 12 neutrons, and electron shells 2, 8, 1. Na+ has the same nucleus and shells 2, 8 after losing one outer electron. Label the lost electron and the +1 charge. Clear educational style, white background.
An unlabeled template students can complete independently.
Create a black-and-white printable Bohr model worksheet for oxygen. Draw an empty nucleus and two concentric electron shells with blank electron positions. Add empty fields for element name, atomic number, protons, neutrons, and electrons, plus blank callout lines for nucleus, electron, and shell. Do not fill in answers. White background.
A Bohr model (also called a Bohr diagram or atomic shell diagram) is a simplified picture of an atom proposed by Niels Bohr in 1913. It shows the nucleus at the center, with protons and neutrons packed inside, and electrons orbiting in fixed concentric shells at set energy levels. While modern quantum mechanics describes electron behavior more accurately, the Bohr model remains the standard teaching diagram in chemistry because it is easy to draw, easy to read, and correctly predicts electron shell counts for elements in the first three periods. Figviz generates a clean, labeled Bohr diagram from a plain description of any element, so you skip the pencil-and-compass work.
For the first 18 elements (the ones most commonly drawn as Bohr models), the shells fill in a simple pattern: Shell 1 holds at most 2 electrons, Shell 2 holds at most 8 electrons, and Shell 3 holds at most 8 electrons in this simplified model. So hydrogen (1 electron) has just one dot on shell 1; carbon (6 electrons) has 2 on shell 1 and 4 on shell 2; sodium (11 electrons) has 2, then 8, then 1 across three shells. For elements beyond argon (atomic number 18) the shell filling becomes more complex, but the 2-8-8 rule covers virtually all Bohr model assignments at the high school level.
Always state the element name and atomic number in your prompt so the diagram uses the correct electron count. Specify whether you want a neutral atom or an ion (losing or gaining electrons changes the outer shell). If you need a teaching diagram, ask for callout labels on each part. For worksheets, ask for a blank template with empty shells and a legend box. After generating, check that the electron dot count in each shell matches the 2-8-8 rule and regenerate with a corrected prompt if any shell is off.
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