In this periodic table of elements quiz, you have 10 minutes to name as many elements as you can, given only their symbol, ...

A table of the chemical elements arranged in order of atomic number, usually in rows, so that elements with similar atomic structure (and hence similar chemical properties) appear in vertical columns.

Three reasons why the periodic table needs a redesign. ... There is no easy way to judge which is better, ... Yet hydrogen is a gas, not a metal, so its properties don’t fit.

Since Mendeleev's time, scientists have discovered new elements, expanding the periodic table. The most recent additions include nihonium, moscovium, tennessine, and oganesson, which were officially ...

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