WebLearn about and revise the halogens in group 7 of the periodic table with this BBC Bitesize GCSE Chemistry (Edexcel) study guide. WebApr 4, 2024 · Halogens. The five elements; Fluorine (F), Chlorine (Cl), Bromine (Br), Iodine (I) and Astatine (At) belonging to VII A Group of the modern periodic table are collectively referred as halogens. The last element Astatine is radioactive and is very short lived hence generally excluded from the study. The word halogen is derived from the Greek ...

Predicting properties - Group 7 halogens - BBC Bitesize

WebThe halogens become darker as you go down the group. Fluorine is very pale yellow, chlorine is yellow-green, and bromine is red-brown. Iodine crystals are shiny grey – but easily turn … WebThe halogens react with metals to produce salts (the word 'halogen' means 'salt former'). For example, chlorine reacts with sodium: Sodium + chlorine → sodium chloride 2Na(s) + Cl 2 … they devoted themselves to the apostles

Group 17: General Properties of Halogens - Chemistry LibreTexts

In chemistry, an interhalogen compound is a molecule which contains two or more different halogen atoms (fluorine, chlorine, bromine, iodine, or astatine) and no atoms of elements from any other group. Most interhalogen compounds known are binary (composed of only two distinct elements). Their formulae are generally XYn, where n = 1, 3, 5 or 7, and X is the less electronegative of the two halo… WebThe halogens exist as simple molecules. Each molecule contains two halogen atoms joined by a single covalent bond . The table shows the colour and physical states of chlorine, … WebThe first four halogens all commonly form anions with a charge of -1, meaning they have gained one electron. They also form diatomic molecules. Fig. 2 - A diatomic chlorine molecule, made from two chlorine atoms. We call ions made from halogen atoms halides. Ionic compounds made from halide ions are called halide salts. the y dianella heights oshc