Cargando...
Public community
What can I do?
Find
Halogens (from the Greek, salt-forming) are very useful elements since, as the name implies, they form salts when they react with metals. Without the halogens we would not have sodium chloride, better ...
The periodic table of the elements is the way proposed by Dmitri Mendeléyev in 1869 to arrange the chemical elements, which are ordered by their atomic number, their electron configuration and ...
Add to Didactalia Arrastra el botón a la barra de marcadores del navegador y comparte tus contenidos preferidos. Más info...
