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.

These elements, with atomic numbers of 113, 115, 117, and 118 comprise the missing parts of period 7 – the lowest ... 118 falls within group 18 of the periodic table, it is a noble gas, with ...

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.