What’s on the Halogens poster
A definition and 5 facts worth remembering.
The most reactive non-metals — one electron short of a full shell, and desperate to gain it.
- Seven electrons in the outer shell.
- Reactivity DECREASES going down the group.
- Form ions with a −1 charge.
- React with metals to make salts.
- Fluorine is the most reactive element of all.
- Group — Group 17
- Members — F, Cl, Br
- F · Cl · Br · I · At
Elements in the same group share outer-electron counts, which is why they behave alike.
Questions about the Halogens poster
- What’s on the Halogens poster?
- A definition and 5 facts worth remembering. The most reactive non-metals — one electron short of a full shell, and desperate to gain it. Seven electrons in the outer shell.; Reactivity DECREASES going down the group.; Form ions with a −1 charge.; React with metals to make salts.; Fluorine is the most reactive element of all.; Group — Group 17; Members — F, Cl, Br; F · Cl · Br · I · At. Elements in the same group share outer-electron counts, which is why they behave alike.
- Who is the Halogens poster for?
- Halogens is filed under 8th Grade (ages 13–14), so it matches what that year asks a child to remember. It is equally useful to an older student revisiting science, and to the parent or teacher answering the question at the kitchen table.
- When should you use the Halogens poster?
- Find the group on the table. Everything in the column behaves this way. A wall chart earns its place by being glanceable from where the work is happening, so Halogens belongs on the wall where that science work actually happens, within glancing distance, rather than filed away.
- What other posters go with Halogens?
- Alkali Metals, Alkaline Earth Metals and Noble Gases sit alongside Halogens in the 8th Grade set. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.Alkali MetalsAlkaline Earth MetalsNoble Gases
- Is the Halogens poster free to download and print?
- Yes. Halogens downloads as a free PDF with no account, no email and no watermark, like everything else in the 8th Grade set. Print as many copies as you like for a home, a classroom, a library or a tutoring group; reselling the file is the only thing the licence rules out.Read the licence
- What size does the Halogens poster print at?
- Halogens is a vector PDF laid out for US Letter, and prints on A4 with Fit to page — the same file, no separate download. Because every mark on it is drawn rather than photographed, it stays sharp enlarged to A3, A2 or A1 at a copy shop. Colour carries emphasis only, so a greyscale print of Halogens loses nothing.Printing guide
Related posters
Charts that sit alongside Halogens on the same wall.
Browse every 8th Grade poster, or start from the full catalogue.