--- title: "Periodic trends Template – Chemistry Diagram | MolDraw" url: https://www.moldraw.com/templates/genchem-periodic-trends/ description: "Periodic trends template: Periodic trends sheet: mini periodic tables with trend arrows and shading for covalent radius, first ionisation energy and Pauling…" lang: en publisher: Scidart Academy generated: 2026-10-28 --- [MolDraw](https://www.moldraw.com/) › [Templates](https://www.moldraw.com/templates/) › [General & inorganic](https://www.moldraw.com/templates/general-and-inorganic/) › Periodic trends [General & inorganic](https://www.moldraw.com/templates/general-and-inorganic/)Premium # Periodic trends template ![Periodic trends template: Periodic trends sheet: mini periodic tables with trend arrows and shading for covalent radius, first ionisation energy and Pauling electronegativity, with real values across period 2 and down groups 1 and 17.](https://www.moldraw.com/templates/genchem-periodic-trends.webp) [Edit in MolDraw](https://www.moldraw.com/)Download with Pro Premium template. Preview and edit it free in MolDraw; downloading and exporting it is part of [MolDraw Pro](https://www.moldraw.com/pricing). Periodic trends sheet: mini periodic tables with trend arrows and shading for covalent radius, first ionisation energy and Pauling electronegativity, with real values across period 2 and down groups 1 and 17. ## What the template shows - Atomic radius, first ionisation energy and electronegativity across period 2 and down a group - Atomic (covalent) radius - Shrinks across a period (more protons, same shell); grows down a group (new shell each period) - increases in the arrow directions - Across period 2 (pm) → - Down Group 1 (pm) → - First ionisation energy - Rises across a period with dips at B (2p electron) and O (first paired 2p electron); falls down a group - Across period 2 (kJ mol⁻¹) → - Down Group 1 (kJ mol⁻¹) → - Electronegativity (Pauling) - Rises across a period and up a group: fluorine is the most electronegative element (3.98) - Across period 2 → - Down Group 17 → - Across a period the nuclear charge rises while electrons enter the same shell: the effective nuclear charge grows, so atoms shrink and hold their electrons more tightly. - Down a group each period adds a shell: the outer electrons are further out and better shielded, so radius grows and ionisation energy and electronegativity fall. - Shading in the small tables shows the general direction only; the boxes give real values. Noble gases have no Pauling electronegativity. - Data: covalent radii (Cordero et al. 2008), ionisation energies (NIST), Pauling electronegativities (CRC Handbook). - Every part of this figure is editable · sources on the template card Drawn with 328 shapes – every one editable in MolDraw. ## Sources - [Cordero et al., Dalton Trans. 2008, 2832 (covalent radii)](https://doi.org/10.1039/b801115j) Database - [NIST Atomic Spectra Database: ionization energies](https://physics.nist.gov/PhysRefData/ASD/ionEnergy.html) Database - [Housecroft & Sharpe, Inorganic Chemistry, 5th ed., Pearson 2018, ch. 1](https://openlibrary.org/isbn/9781292134147) Textbook ## How to use this template 1. Press **Edit in MolDraw**. The template opens on the canvas of the free MolDraw editor. 2. Change anything: move structures, edit atoms and labels, recolour highlights or delete what you do not need. 3. Add your own structures, arrows and text next to it, or combine several templates on one page. 4. Export the drawing as PNG, SVG or PDF for slides, worksheets, theses and papers. ## Frequently asked questions ### Is the Periodic trends template free? You can preview the Periodic trends template here and open and edit it in MolDraw for free. Downloading or exporting it is part of MolDraw Pro, together with the other premium templates. ### Can I edit the Periodic trends template? Yes. It opens as an ordinary MolDraw drawing, so every structure, arrow, label and colour can be changed, and you can add your own content around it. ### Is the chemistry checked? Every structure is checked with RDKit and every curly arrow passes MolDraw’s electron-flow audit. The sources used are listed on this page. ### Which MO diagrams are included? 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