Chlorine is a halogen in group VII A of the periodic table with atomic number 17, an atomic weight of 35.45, and a density of 1.56 Mg/m 3. In the solid state it forms a tretragonal crystal with a ...

At room temperature, oxygen reacts with the surface of the metal. This forms a white oxide, which covers the surface. The metal below the surface does not react.

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 positioned in group 7 of the periodic table ...

Mendeleev discovered the periodic table (or Periodic System, as he called it ... but Mendeleev saw that iodine was very similar to the rest of the halogens (fluorine, chlorine, bromine), and tellurium ...

These are almost one-quarter of the periodic table and are mainly found in the ... phosphorus, sulphur, chlorine, potassium, sodium, calcium and magnesium. How polio affects the body and what ...

On the periodic table, which contains 118 elements ... That's how we get table salt (sodium + chlorine = NaCl, sodium chloride). You can find a diatomic molecule everywhere.