The “lead” of a pencil is actually made of a substance called graphite which is made of carbon atoms. The picture shows a close-up of one carbon atom ... When the plastic strip is rubbed on the skin, ...

Atoms are in fact made up of three smaller particles called protons, electrons and neutrons ... The atoms of each element in the periodic table have different number of protons, and hence ...

The periodic ... of electrons that orbit in the shell furthest form the nucleus. It is the arrangement of these electron orbits that is reflected in the different blocks of the periodic table.

As you move from left to right across the periodic table, atoms have more electrons in their outer energy level and more protons in their nucleus. The greater attraction between the increased ...

Oregon State University researchers have synthesized new molecules able to quickly capture significant amounts of carbon ... periodic table and their name arises from the transition of electrons ...