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.

In 1869, Mendeleev's first periodic table did not include them ... But Ramsey established their position between halogens and alkali metals, and was awarded the Nobel Prize in Chemistry in ...

Headlamps come in several sizes, shapes and types, as do their bulbs, which need periodic replacing. A majority of vehicles still use halogen headlamp bulbs, but a growing number come with high ...