Naturally occurring superheavy elements beyond those listed in the periodic table could potentially explain why asteroid 33 Polyhymnia is so dense, new research suggests. When you purchase through ...

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

In their momentary life span, atoms of lawrencium, element 103, may have left a lasting impression on the structure of the periodic table. For the first time, researchers have measured a basic ...

he left gaps for yet to be discovered elements he switched the order of a few elements to keep the groups consistent Iodine has a lower relative atomic mass than tellurium. So iodine should be placed ...

Editor's note: The following is a text-only version. The complete version with artwork is available for purchase here (PDF). The periodic table of the elements is one of the most powerful icons in ...