There is a graduation of the properties of the elements in the modern periodic table and there is a relation between these properties and the electronic configuration of elements, The graduation of some properties...
The metalloids The metalloids are semi-metallic elements that have the properties of both metals and nonmetals, It is difficult to know the metalloids from their outermost electrons due to the difference in the numbers...
Every day, we can see the matter around us which has a mass and a volume. The matter may exist as an element or a compound, The element is the simplest form of matter that...
