Halogens

Start with the elements

The Halogens page brings together different ways to study Group 7. For an introduction, start with the note Group 7 - Halogens. It names the elements and describes their outer-shell electrons. Then look at the mind map The Halogens, which brings together properties and trends down the group.

The map covers changes in reactivity and in melting and boiling points. As you study it, compare those trends with the information in the note. The two formats offer different ways to organize the same area of study: one in written notes and the other as a map.

Use flashcards and quizzes

After looking at the overview, use the Group 7 Halogens flashcards to practice questions on the elements and trends such as atomic radius and electronegativity. The Group 7 - the Halogens flashcards ask about the colors and physical states of individual halogens at room temperature.

Next, try the quiz Element Group: Halogens. It includes questions about where the halogens are found in the periodic table and which elements belong to the group. Return to a note or map when a question exposes something you want to study again. You can then work through the quiz once more, using the map to organize the points you need to remember.

Explore the topic in the unit

For a broader map, Group 7 - The Halogens includes bonding, electronic configuration, colors, tests and displacement reactions. It also lists topics such as disproportionation and electrode reactions, so you can use its branches to choose what to look at next.

Halogens is one section of The Periodic Table unit in Chemistry. The resources on this page connect the elements in the group with their properties and trends, helping you place this section within the unit. Choose a resource that fits the point you want to practice next.