The covalent radius (a measure of how large individual atoms are) shows different trends if you are moving ... As you move from left to right across the periodic table, atoms have more electrons ...

Elements in group 1 and group 2 are metals. Atoms of group 1 elements ... See the study guide on groups in the periodic table for more information.

Scientists use the periodic table to quickly refer to information about an element, like atomic mass and chemical symbol. The periodic table’s arrangement also allows scientists to discern trends in ...

without some of the key properties of a metal. Germanium's existence was predicted before anyone isolated it. This was a triumph for Dmitri Mendeleev in his construction of the periodic table. By 1869 ...

Spraying Windex onto the samples produces a color that depends on the metal residing ... the online periodic table, ptable.com, to investigate a number of chemistry concepts. Students will use this ...