They react with water to produce an alkaline metal hydroxide solution and hydrogen. Reactivity increases down the group. Group 7 - the halogens - Edexcel The group 7 elements are all reactive non ...

This film discusses the halogens, specifically chlorine, bromine, and iodine, detailing their preparation from naturally occurring salts and their chemical properties. The film demonstrates various ...

They react rapidly (very fast) with water, producing an alkaline solution and hydrogen gas. The metals become more reactive as you go down the group. The elements in group 7 are known as halogens.

Aqueous batteries use water as ... used a mixed halogen solution of iodide ions (I-) and bromide ions (Br-) as the electrolyte. They developed a multi-electron transfer reaction, transferring ...