We also, confusingly, tend to refer to pure substances made of one kind of atom, like chlorine gas, as elements. But these are very different from the isolated atoms depicted on the periodic table.

An element's atomic number defines it. An element with 17 protons will always be chlorine. However an element's mass numbers can vary, which means that it can have different numbers of neutrons.

It also tells us that chlorine has 18 neutrons (35 - 17) and, as the number of electrons and protons are equal in a neutral atom ... isotopes are forms of an element that have the same number ...

These catalysts mediate two important reactions, namely the oxygen evolution and chlorine ... Single-Atom Centers under Anodic Polarization Conditions, Journal of the American Chemical Society ...

The reaction releases a lot of heat as the ionic compound sodium chloride is formed. A sodium and chlorine atom are near each other. An electron from each atom feels the attraction from the other atom ...

In a chemical bond, the more electronegative atom gains extra ... The electrons in the covalent bond are shared equally between the two oxygen atoms. The chlorine atom has a higher electronegativity ...