Students look more deeply into the structure of the atom and play a game to better understand the relationship between protons, neutrons, electrons, and energy levels in atoms and their location in ...

The atomic number of tellurium is 52 and the atomic number of iodine is 53, so these elements are in the correct order in the modern periodic table.

Periodicity is a chemistry term that refers to the behavior of the elements based on the number of protons in the atom. For the world at large, an "element table" makes more sense. See atom.

and it is the amount of protons that determine the energy of the X-rays. After years of searching, at last we had a periodic table that really worked, and the fact that we still use it today is ...

The periodic table organizes chemical elements based on atomic weight, electron configurations, and chemical properties, ...

This was the first version of what would come to be known as the modern periodic table, now composed of 118 elements arranged in 18 groups (columns), and 7 periods (rows). Today, the elements are ...

After a breakdown in US-Russia relations, Riken finds itself ahead of its rivals. And Lawrence Berkeley National Laboratory chases element 120 ...

If it has 7 protons, that’s nitrogen. But the logic of the periodic table also relies upon the number and organisation of electrons in an atom. Let’s take chlorine as an example. It is ...

SUNAYANA: I also like to think of the atomic number as the address of an element – it tells you how many protons are in the nucleus and also its position in the periodic table. That's what makes ...