Atoms, elements and compounds - AQA Mixtures - AQA Atomic structure - AQA The periodic table - AQA Sample exam questions - atomic structure and the periodic table - AQA ...

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 ...

Mrs Roberts: Well, elements that have similar properties to each other are put into vertical columns called groups. Now, the table is called the periodic table because the elements with similar ...

Meyer was just four years older than Mendeleev, and produced several Periodic Tables between 1864-1870. His first table contained just 28 elements, organised by their valency (how many other atoms ...

In this periodic table of elements quiz, you have 10 minutes to name as many elements as you can, given only their symbol, atomic weight and the broad group they live in. It's no mean feat ...

Want to learn more about this centerpiece of chemistry? Take your pick from this collection of links about elements and the periodic table! Build an element ball, solve periodic puzzles, and check out ...

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Eighty out of the first 82 elements in the periodic table have stable isotopes. Measuring and analysing their distribution allows for many practical applications. The IAEA assists Member States in ...