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 ...

and read off the time using the atomic number of the elements. So, if it’s 13:03:23, that would light up aluminum in blue, lithium in green, and vanadium in red. The periodic table was designed ...

The periodic table that we follow for our studies is the Modern Periodic Table, which is based on atomic number rather than atomic mass. This arrangement was established by the British physicist ...

This video is an interactive lesson in calculating an atom’s mass and atomic number. Atoms consist of a nucleus containing protons and neutrons, surrounded by electrons in shells. The numbers of ...

Eighty out of the first 82 elements in the periodic table have stable isotopes ... For this purpose, they must be separated using highly sophisticated techniques, such as mass spectrometry. While ...