The table shows the melting points of five alkali metals. Use this information to describe how melting point changes in group 1.

The actual boiling point of radon is -61.7˚C. An estimate would lie midway between -100˚C and -50˚C based on the shape of the graph.

Topics are aligned with curriculum for physical science, earth and space science ... In this edition of Celebrating Chemistry, explore atoms and the periodic table, go on an element scavenger hunt ...

Up until this point the atomic number simply referred to an element’s positioning in the periodic table, and was not known to correspond to a measurable physical quantity. Thanks to Moseley’s work it ...

Test your knowledge and compete with other Live Science readers to see who can come top in our periodic table quiz. The ...

In this activity, students will use the online periodic table, ptable.com, to investigate a number of chemistry concepts. Students will use this online resource to explore information about the ...

Electronegativity, an essential characteristic of all elements in the periodic table, measures an atom's ability to attract electrons towards ... It is expected to correlate with numerous physical ...