The periodic table L.O.: Use the periodic table to find: the symbol of an element, metals and non-metals, halogens and noble gases. Explain the reactivity.
Group 7 Elements The Halogens. Group 7 – the halogens The elements in group 7 of the periodic table, on the right, are called the halogens. fluorine chlorine.
Application of Core principles Of chemistry Edexcel new Specification Halogens.
Explain, in terms of electrons, why potassium reacts more violently than sodium. (3 marks)
