Group 7 - the halogens - Edexcel The group 7 elements ... Sample exam questions - groups in the periodic table - Edexcel Understanding how to approach exam questions helps to boost exam performance.

and group 7 elements (halogens). If you struggled with the quiz, don't panic - we've got you! You can revise the relevant areas by clicking the links below.

Group 7 of the periodic table is something of an oddity. When the first periodic table was formulated by Mendeleev, it was the only group that contained just a single known element — manganese.

The periodic table of chemical elements, often called the periodic table, organizes all discovered chemical elements in rows (called periods) and columns (called groups) according to increasing atomic ...

But the logic of the periodic table also relies upon the number and organisation of electrons in an atom. Let’s take chlorine as an example. It is positioned in group 7 of the periodic table ...