Β 
VIEW IN FULL SCREEN

The halogens

The halogens

This page covers the following topics:

Halogens form small covalent molecules with the formula, Xβ‚‚, held together by van der Waals forces. Larger atoms can form more van der Waals forces, strengthening their intermolecular interactions. Therefore, the melting and boiling points of halogens increases as you travel down the group

Melting and boiling points of halogens

Electronegativity, Ο‡, is the ability of an element to attract a pair of shared electrons in a covalent bond. The electronegativity of halogens increases as you go up the group.

Electronegativity of halogens

The neutral molecular halogens readily accept electrons, so they act as oxidising agents, taking electrons from other molecules. The negatively charged halide ions have spare electrons available, so they act as reducing agents, giving electrons to other molecules.

Oxidising and reducing ability of halogens

The halogens have many uses. Fluorine is highly reactive, but is used to make teflon, a famously unreactive material. Chlorine has many uses in cleaning products as it can kill bacteria. Bromine is toxic, so has applications in insecticides. Iodine is a useful atom in the synthesis of pharmaceuticals.

Uses of halogens

A common chemistry experiment is the identification of silver halides by their characteristic solubility properties. The addition of silver nitrate to a halide solution produces the corresponding silver halide. The solubility and colour of the silver halide precipitate, under various conditions, allows the unknown halide to be identified.

Solubility of silver halides

#0

βœ…

Loading ...

trasparent34.png
FULL SCREEN
SHOW ANSWER
Image_edited.png

Did you know?

By simply logging in, you would be able to access 50% more questions.

#0

βœ…

Loading ...

trasparent34.png
FULL SCREEN
SHOW ANSWER
Image_edited.png

I'm a paragraph. Click here to add your own text and edit me. It's easy.

FULL SCREEN
Image.png

Have you found the questions useful?

Sign up to access 50% more of them for free πŸ˜€

End of page

Β