This video explains the periodic table, containing all the known elements arranged in groups and periods. Elements in the same group of the periodic table show trends in physical properties ...

How do we calculate mass and atomic numbers? VideoHow do we calculate mass and atomic numbers? This video is an interactive lesson in calculating an atom's mass and atomic number.

The periodic table of chemical elements, often called the periodic table, organizes all discovered chemical elements in rows (called periods) and columns (called groups) according to increasing atomic ...

He announced his structure in 1869, but the challenge of creating a system to organise ... Thanks to Moseley’s work it now became possible to place elements in the periodic table according to their ...

The periodic table was arranged by atomic mass, and this nearly always gives the same order as the atomic number ... and many people think that Britain lost a future Nobel prize winner. Within 10 ...

In this edition of Celebrating Chemistry, explore atoms and the periodic table, go on an element scavenger hunt around your home, and try your hand at an elemental word search. Guide Linus—a lab ...

How far can the periodic table go and will we ever synthesize ... equipment to probe nobelium atoms and measure their atomic hyperfine structure. They produced a key isotope from the decay of ...

Silicon is a semiconductor in group IVA of the periodic table with atomic number 14, an atomic weight of 28.086, and a density of 2.33 Mg/m 3. It melts at 1410 C. The electronic configuration of the ...

in search of where the periodic table of chemical elements ends. In a study published in the journal Nature, the research team provide insight into the structure of atomic nuclei of fermium ...